bluuebunny/crossref_metadata_2025 huggingface dataset:
Who Values Corporate Social Responsibility in the Korean Stock Market?
Authors: Lee Sangki , Kim Insu , Hong Chung-hun
Published: October 2019

In this study, we explore the stock market’s response to new information that a firm has been included in the Dow Jones Sustainability Index (DJSI) in Korea. In addition, we investigate which investor group contributes to the changes, if any significant increase in returns is found, after a firm’s incorporation into the DJSI. This study aims to identify which investors value corporate social responsibility (CSR) in the Korean stock market and examine whether the government-led campaigns for CSR have affected private sector investors, as well as those from the public sector. We find statistically significant abnormal returns for firms after their first listing in the index, implying that investors in Korean markets consider a firm’s inclusion in the DJSI as good news for the firm value. Using a unique dataset from the Korea Exchange (KRX) on investors, we classify investors into four groups: individual investors, public pension funds, other institutional investors, and foreign investors. Unlike prior studies that focus only on the existence of abnormal returns, we investigate the trading behavior of each investor group for such announcements. We find that it is mainly the buying pressure of public pension funds that generates abnormal returns. By contrast, we cannot find statistically significant results for the other investor groups. This result implies that the government-led campaign for CSR has only had limited effects in the Korean stock market, and that awareness of CSR in the private sector should be improved.
A Framework for the Sustainability Assessment of (Micro)transit Systems
Authors: Buenk Reinhart , Grobbelaar Sara S (Saartjie) , Meyer Isabel
Published: October 2019

The increasing global focus on sustainability is bringing the question of the sustainability of transport systems—which are still exhibiting numerous negative effects as evidence of their unsustainability—to the fore. While sustainability is an often-discussed concept, tools to guide the practical implementation thereof are limited. This paper presents a framework for an inventory of indicators against which to measure the sustainability of transport systems. While the framework is validated for urban transport systems for increased mobility (here referenced as microtransit systems), the concept is investigated in the context of transport systems in general. A systematic review of the literature was used to develop a framework of 12 areas and 50 indicators of sustainability. Expert reviews, an Analytical Hierarchical Process (AHP), and an Equally Weighted Average (EWA) method were employed to allocate weights to the indicators and to validate the framework for microtransit systems. The framework contributes to the literature by identifying, categorizing, and integrating concepts related to sustainability in transport systems. It is intended to aid short-term decision-making in the design of urban transport systems, to continuously monitor the long-term progress of transport systems against sustainability goals, and to guide policy development. Future work would include enhanced empirical validation of the framework in the context of other types of transport systems, beyond microtransit.
Statistical Evaluation of Mechanical Properties of Slag Based Alkali-Activated Material
Authors: Sisol Martin , Kudelas Dušan , Marcin Michal , Holub Tomáš , Varga Peter
Published: October 2019

Slag is one of the by-products of the energy industry, which is suitable for secondary industrial processing. Although slag has been successfully used in industrial production for several decades, its use does not achieve the level of its potential. Today, to achieve a sustainable construction industry, alternative types of cement have been extensively investigated. Geopolymer is a kind of material which is obtained from the alkaline activator and it can be produced from the industrial wastes or by-products. In this study, SiO2/Na2O ratio and the amount of Na2O in activation solution parameters of alkali-activated materials were tested how they affect the strengths of hardened geopolymers from ground granulated blast furnace slag (GGBFS). Compressive and flexural strength tests were conducted, and the results were analyzed by analysis of variance (ANOVA). Strengths were tested after 7, 28, and 90 days.
Illicit Chinese Small-Scale Mining in Ghana: Beyond Institutional Weakness?
Authors: Boafo James , Paalo Sebastian , Dotsey Senyo
Published: October 2019

While the engagement of Chinese migrants in small-scale mining in Ghana has gained traction in scholarship, the extant literature pays little attention to how the relationship between the so-called formal institutions (e.g., the Minerals Commission and Ministry of Land and Natural Resources) and informal institutions (e.g., the chieftaincy and customary land institutions) enables illegalities in the mining industry. This paper addresses this gap in the literature, focusing on the relationship between formal state and informal customary land institutions in the small-scale mining sector. Using an institutional analytical framework, we argue that the increasing involvement of the Chinese in small-scale mining in Ghana is an expression of a bigger and deep-seated problem characterized largely by uncoordinated interactions between key state and customary institutions. This, we suggest, creates parallel operations of formal and informal systems that promote different levels of agency and maneuvering among actors―breeding uncertainty, bureaucratic logjams, and illegalities in the mining industry. Based on our findings, we recommend that a more efficient coordination between the relevant state and traditional land governing institutions could curb the proliferation of illegal mining activities, and in particular, those involving Chinese migrants. As part of the conclusion, we suggest that future empirical research be conducted to explore the interactions between formal and informal institutions and how they affect mining activities.
Conservation Value of World Natural Heritage Sites’ Outstanding Universal Value via Multiple Techniques—Bogda, Xinjiang Tianshan
Authors: Shi Hui , Shi Tiange , Han Fang , Liu Qin , Wang Zhi , Zhao Hulan
Published: October 2019

The protection of World Natural Heritage Sites (WNHSs) has become a global undertaking, wherein Outstanding Universal Value (OUV) is an important aspect of heritage protection. Focusing on the protection of the aesthetic and bioecological values of Bogda (one component of Xinjiang Tianshan WNHS), 17 indicators are selected to construct a Heritage Value Protection Significance Index (HVPSI) and a related Heritage Value Protection Index (HVI). From these, the level of OUV conservation is obtained according to the five aspects of integrity, vulnerability, sensitivity, degree of human impact and environmental factors. The spatial autocorrelation analysis method was applied to the OUV conservation indices to comprehensively reflect the spatial-pattern characteristics of the heritage value in the study area. According to the spatial-division of the HVPSI, the plant community composition and diversity characteristics of different HVPSI zones are analyzed by a field survey (July 2018 and 2019). To verify the rationality of space partition and identify the OUV elements in each HVPSI district, a spatial-econometric model is then used to explore the relationship among HVPSI, HVI and community diversity. This study provides a scientific basis for management of heritage sites and a theoretical basis for further investigation into heritage site indicators.
A Framework to Advance the Understanding of the Ecological Effects of Extreme Climate Events
Authors: Sanz-Lazaro Carlos
Published: October 2019

Climate change is modifying disturbance regimes, affecting the severity and occurrence of extreme events. Current experiments investigating extreme events have a large diversity of experimental approaches and key aspects such as the interaction with other disturbances, the timing, and long-term effects are not usually incorporated in a standardized way. This lack of comparability among studies limits advances in this field of research. This study presents a framework that is comprised of two experimental approaches designed to test expected changes on disturbance regime due to climate change. These approaches test the effects of disturbances becoming more clustered and more extreme. They use common descriptor variables regardless of the type of disturbance and ecosystem. This framework is completed with a compilation of procedures that increase the realism of experiments in the aforementioned key aspects. The proposed framework favours comparability among studies and increases our understanding of extreme events. Examples to implement this framework are given using rocky shores as a case study. Far from being perfect, the purpose of this framework is to act as a starting point that triggers the comparability and refinement of these types of experiments needed to advance our understanding of the ecological effects of extreme events.
Effect of Manganese on Co–Mn/CNT Bimetallic Catalyst Performance in Fischer–Tropsch Reaction
Authors: Akbarzadeh Omid , Mohd Zabidi Noor Asmawati , Aljunid Merican Zulkifli Merican , Sagadevan Suresh , Kordijazi Amir , Das Sourav , Amani Babadi Arman , Ab Rahman Marlinda , Hamizi Nor Aliya , Abdul Wahab Yasmin , Rafie Johan Mohd
Published: October 2019

Cobalt (Co) catalyst is supported by carbon nanotubes (CNT) using a strong electrostatic adsorption (SEA) method. To promote activity and selectivity as well as find the optimum loading percentage and its effect on catalyst performance, manganese (Mn) has been added to the Co/CNT catalyst. Samples were characterized by a scanning electron microscope (SEM-EDX), transmission electron microscope (TEM), hydrogen temperature programmed reduction (H2-TPR), Zeta potential, Brunauer–Emmett–Teller (BET) analysis, X-ray diffraction (XRD), and X-ray spectroscopy (XPS). TEM images illustrated an intake of metal particles which were highly dispersed, having a narrow particle size distribution of 6–8 nm to the external and internal CNT support. H2-TPR showed a lower temperature reduction with Mn at 420 °C for Fischer–Tropsch synthesis (FTS) reaction. The Co–Mn/CNT catalyst performance test for FTS was performed at a temperature of 240 °C in a fixed-bed micro-reactor at a pressure of 2.0 MPa. The addition of manganese resulted in a lower methane selectivity and a higher C5+ product with an optimum percentage of 5% of manganese. CO conversion was 86.6% and had a C5+ selectivity of 81.5%, which was higher than the catalysts obtained using only Co on pretreated CNT.
A Multi-Stage Homotopy Perturbation Method for the Fractional Lotka-Volterra Model
Authors: Arciga-Alejandre Martin P. , Sanchez-Ortiz Jorge , Ariza-Hernandez Francisco J. , Catalan-Angeles Gabriel
Published: October 2019

In this work, we propose an efficient multi-stage homotopy perturbation method to find an analytic solution to the fractional Lotka-Volterra model. We obtain its order of accuracy, and we study the stability of the system. Moreover, we present several examples to show of the effectiveness of this method, and we conclude that the value of the derivative order plays an important role in the trajectories velocity.
Analysis of a Chaotic System with Line Equilibrium and Its Application to Secure Communications Using a Descriptor Observer
Authors: Moysis Lazaros , Volos Christos , Pham Viet-Thanh , Goudos Sotirios , Stouboulos Ioannis , Gupta Mahendra Kumar , Mishra Vikas Kumar
Published: October 2019

In this work a novel chaotic system with a line equilibrium is presented. First, a dynamical analysis on the system is performed, by computing its bifurcation diagram, continuation diagram, phase portraits and Lyapunov exponents. Then, the system is applied to the problem of secure communication. We assume that the transmitted signal is an additional state. For this reason, the nonlinear system is rewritten in a rectangular descriptor form and then an observer is constructed for achieving synchronization and input reconstruction. If we assume some rank conditions (on the nonlinearities and the solvability of a linear matrix inequality (LMI)) on the system matrices then the observer synchronization can be feasible. We evaluate and demonstrate our approach with specific numerical results.
Fluorescent Protein Inserts in between NC and SP2 Are Tolerated for Assembly, Release and Maturation of HIV with Limited Infectivity
Authors: Bendjennat Mourad , Saffarian Saveez
Published: October 2019

We report the design of a fluorescent HIV construct that is labeled by insertion of fluorescent protein between the nucleocapsid (NC) and spacer peptide 2 (SP2) domains of Gag and further show that the fluorescent protein is released from its confines within Gag during maturation. This fluorescent HIV is capable of budding and maturation with similar efficiency to the parental virus. Virions generated using this design within the R8 HIV backbone pseudotyped with VSV-G were capable of delivering small RNA genomes encoding GFP to the target cells; however, the same design within the NL4-3 backbone has limited HIV infectivity. The virions generated by these constructs are approximately 165 ± 35 nm in size, which is significantly larger than wild type HIV. We suggest that this design has the potential to be a vehicle for protein and small guide RNA delivery.
Influence of Immunogenetic Biomarkers in the Clinical Outcome of HTLV-1 Infected Persons
Authors: Vallinoto Antonio Carlos Rosário , Cayres-Vallinoto Izaura , Freitas Queiroz Maria Alice , Ishak Marluísa de Oliveira Guimarães , Ishak Ricardo
Published: October 2019

Human T-lymphotropic virus 1, a member of the Retroviridae family, causes a neglected, silent, persistent infection affecting circa 5 to 10 million people around the world, with biology, immune pathology, clinical diseases, epidemiology, and laboratory issues still unsolved. Most of the infected subjects are asymptomatic, but severe clinical disorders appear as a neurodegenerative disease (HTLV-1 associated myelopathy—HAM) or a lymphoprolipherative disorder (Adult T Leukemia/Lymphoma—ATLL) and in other target organs of the human body. HTLV-1 infections are frequently asymptomatic, but there is a large spectrum of diseases that have been described along the years. The mechanisms by which the virus interacts with the host, the different modes of response of the host to the infection, and the immunogenic characteristics of the host are some of the interesting and unanswered questions that may direct the outcome of the disease. The most relevant published results dealing with the genetic variations of the host, the immune response to HTLV-1 infection, and the outcome of the infection are presented herein, including Human Leucocyte Antigen (HLA), Killer Immunoglobulin-like Receptors (KIR), interleukin 6, 10, 28, Fas and Fas ligand, IFN-gamma, TNF-A, and Mannose-binding lectin. In summary, there are still several unmet research needs in the field of useful biomarkers on HTLV-1 pathogenesis.
Large Phenotypic and Genetic Diversity of Prophages Induced from the Fish Pathogen Vibrio anguillarum
Authors: Castillo Daniel , Andersen Nana , Kalatzis Panos G. , Middelboe Mathias
Published: October 2019

Vibrio anguillarum is a marine pathogenic bacterium that causes vibriosis in fish and shellfish. Although prophage-like sequences have been predicted in V. anguillarum strains, many are not characterized, and it is not known if they retain the functional capacity to form infectious particles that can infect and lysogenize other bacterial hosts. In this study, the genome sequences of 28 V. anguillarum strains revealed 55 different prophage-related elements. Chemical and spontaneous induction allowed a collection of 42 phage isolates, which were classified in seven different groups according to a multiplex PCR assay. One shared prophage sequence, p41 (group III), was present in 17 V. anguillarum strains, suggesting that this specific element is very dynamically exchanged among V. anguillarum populations. Interestingly, the host range of genetically identical phages was highly dependent on the strains used for proliferation, indicating that phenotypic properties of phages were partly regulated by the host. Finally, experimental evidence displayed that the induced phage ɸVa_90-11-287_p41 was able to lysogenize V. anguillarum strain Ba35, and subsequently spontaneously become released from the lysogenized cells, demonstrating an efficient transfer of the phage among V. anguillarum strains. Altogether, the results showed large genetic and functional diversity and broad distribution of prophages in V. anguillarum, and demonstrated the potential of prophages as drivers of evolution in V. anguillarum strains.
Effects of Regulatory T Cell Depletion on NK Cell Responses against Listeria monocytogenes in Feline Immunodeficiency Virus Infected Cats
Authors: Simões Rita D. , LaVoy Alora , Dean Gregg A.
Published: October 2019

Regulatory T cells (Treg) are key players in the maintenance of peripheral tolerance, preventing autoimmune diseases and restraining chronic inflammatory diseases. Evidence suggests Treg cells and NK cells have important roles in feline immunodeficiency virus (FIV) pathogenesis; however, in vivo studies investigating the interplay between these two cell populations are lacking. We previously described innate immune defects in FIV-infected cats characterized by cytokine deficits and impaired natural killer cell (NK) and NK T cell (NKT) functions. In this study, we investigated whether in vivo Treg depletion by treatment with an anti-feline CD25 monoclonal antibody would improve the innate immune response against subcutaneous challenge with Listeria monocytogenes (Lm). Treg depletion resulted in an increased overall number of cells in Lm-draining lymph nodes and increased proliferation of NK and NKT cells in FIV-infected cats. Treg depletion did not normalize expression of perforin or granzyme A by NK and NKT cells, nor did Treg depletion result in improved clearance of Lm. Thus, despite the quantitative improvements in the NK and NKT cell responses to Lm, there was no functional improvement in the early control of Lm. CD1a+ dendritic cell percentages in the lymph nodes of FIV-infected cats were lower than in specific-pathogen-free control cats and failed to upregulate CD80 even when Treg were depleted. Taken together, Treg depletion failed to improve the innate immune response of FIV-infected cats against Lm and this may be due to dendritic cell dysfunction.
Emergence of Southern Rice Black-Streaked Dwarf Virus in the Centuries-Old Chinese Yuanyang Agrosystem of Rice Landraces
Authors: Alonso Pascal , Gladieux Pierre , Moubset Oumaima , Shih Pei-Jung , Mournet Pierre , Frouin Julien , Blondin Laurence , Ferdinand Romain , Fernandez Emmanuel , Julian Charlotte , Filloux Denis , Adreit Henry , Fournier Elisabeth , Ducasse Aurélie , Grosbois Vladimir , Morel Jean-Benoit , Huang Huichuan , Jin Baihui , He Xiahong , Martin Darren P. , Vernière Christian , Roumagnac Philippe
Published: October 2019

Southern rice black-streaked dwarf virus (SRBSDV), which causes severe disease symptoms in rice (Oriza sativa L.) has been emerging in the last decade throughout northern Vietnam, southern Japan and southern, central and eastern China. Here we attempt to quantify the prevalence of SRBSDV in the Honghe Hani rice terraces system (HHRTS)—a Chinese 1300-year-old traditional rice production system. We first confirm that genetically diverse rice varieties are still being cultivated in the HHRTS and categorize these varieties into three main genetic clusters, including the modern hybrid varieties group (MH), the Hongyang improved modern variety group (HY) and the traditional indica landraces group (TIL). We also show over a 2-year period that SRBSDV remains prevalent in the HHRTS (20.1% prevalence) and that both the TIL (17.9% prevalence) and the MH varieties (5.1% prevalence) were less affected by SRBSDV than were the HY varieties (30.2% prevalence). Collectively we suggest that SRBSDV isolates are freely moving within the HHRTS and that TIL, HY and MH rice genetic clusters are not being preferentially infected by particular SRBSDV lineages. Given that SRBSDV can cause 30–50% rice yield losses, our study emphasizes both the need to better monitor the disease in the HHRTS, and the need to start considering ways to reduce its burden on rice production.
Dissolved Inorganic Geogenic Phosphorus Load to a Groundwater-Fed Lake: Implications of Terrestrial Phosphorus Cycling by Groundwater
Authors: Nisbeth Catharina Simone , Kidmose Jacob , Weckström Kaarina , Reitzel Kasper , Odgaard Bent Vad , Bennike Ole , Thorling Lærke , McGowan Suzanne , Schomacker Anders , Kristensen David Lajer Juul , Jessen Søren
Published: October 2019

The general perception has long been that lake eutrophication is driven by anthropogenic sources of phosphorus (P) and that P is immobile in the subsurface and in aquifers. Combined investigation of the current water and P budgets of a 70 ha lake (Nørresø, Fyn, Denmark) in a clayey till-dominated landscape and of the lake’s Holocene trophic history demonstrates a potential significance of geogenic (natural) groundwater-borne P. Nørresø receives water from nine streams, a groundwater-fed spring located on a small island, and precipitation. The lake loses water by evaporation and via a single outlet. Monthly measurements of stream, spring, and outlet discharge, and of tracers in the form of temperature, δ18O and δ2H of water, and water chemistry were conducted. The tracers indicated that the lake receives groundwater from an underlying regional confined glaciofluvial sand aquifer via the spring and one of the streams. In addition, the lake receives a direct groundwater input (estimated as the water balance residual) via the lake bed, as supported by the artesian conditions of underlying strata observed in piezometers installed along the lake shore and in wells tapping the regional confined aquifer. The groundwater in the regional confined aquifer was anoxic, ferrous, and contained 4–5 µmol/L dissolved inorganic orthophosphate (DIP). Altogether, the data indicated that groundwater contributes from 64% of the water-borne external DIP loading to the lake, and up to 90% if the DIP concentration of the spring, as representative for the average DIP of the regional confined aquifer, is assigned to the estimated groundwater input. In support, paleolimnological data retrieved from sediment cores indicated that Nørresø was never P-poor, even before the introduction of agriculture at 6000 years before present. Accordingly, groundwater-borne geogenic phosphorus can have an important influence on the trophic state of recipient surface water ecosystems, and groundwater-borne P can be a potentially important component of the terrestrial P cycle.
Elimination of Micropollutants in Activated Sludge Reactors with a Special Focus on the Effect of Biomass Concentration
Authors: Hatoum Rana , Potier Olivier , Roques-Carmes Thibault , Lemaitre Cécile , Hamieh Tayssir , Toufaily Joumana , Horn Harald , Borowska Ewa
Published: October 2019

This study aimed to investigate the effects of sludge retention time (SRT), hydraulic retention time (HRT), and biomass concentration (CTSS) in activated sludge systems on removal of various micropollutants (MPs), covering a wide spectrum of biodegradability. The influence of biomass concentration on the classical pseudo-first-order rate constant was verified. Results showed that the removal rate constants were affected by both the HRT and SRT. The enhancement of the SRT increased the removal of all the MPs except for two macrolide antibiotics. Application of a higher HRT also improved MP removal, as was expected from the measured removal rate constants. More interesting, our results indicated that, logically, the increase of biomass concentration (expressed as total suspended solids CTSS) from 3 to 5 gTSS L−1 significantly enhanced the removal rate of the highly and moderately degradable compounds. Conversely, a further increase to 8 gTSS L−1 produced only an unexpected moderate effect, showing that the rate was not proportional to biomass concentration, contrary to what is generally postulated. Therefore, the use of classical kinetic models is questionable, since they do not cover the entire range of boundary conditions in activated sludge systems. This work opens new research paths and suggests potential improvements to processes.
Microcosm Experiment to Assess the Capacity of a Poplar Clone to Grow in a PCB-Contaminated Soil
Authors: Nogues Isabel , Grenni Paola , Di Lenola Martina , Passatore Laura , Guerriero Ettore , Benedetti Paolo , Massacci Angelo , Rauseo Jasmin , Barra Caracciolo Anna
Published: October 2019

Polychlorinated byphenyls (PCBs) are a class of Persistent Organic Pollutants extremely hard to remove from soil. The use of plants to promote the degradation of PCBs, thanks to synergic interactions between roots and the natural soil microorganisms in the rhizosphere, has been proved to constitute an effective and environmentally friendly remediation technique. Preliminary microcosm experiments were conducted in a greenhouse for 12 months to evaluate the capacity of the Monviso hybrid poplar clone, a model plant for phytoremediation, to grow in a low quality and PCB-contaminated soil in order to assess if this clone could be subsequently used in a field experiment. For this purpose, three different soil conditions (Microbiologically Active, Pre-sterilized and Hypoxic soils) were set up in order to assess the capacity of this clone to grow in the polluted soil in these different conditions and support the soil microbial community activity. The growth and physiology (chlorophyll content, chlorophyll fluorescence, ascorbate, phenolic compounds and flavonoid contents) of the poplar were determined. Moreover, chemical analyses were performed to assess the concentrations of PCB indicators in soil and plant roots. Finally, the microbial community was evaluated in terms of total abundance and activity under the different experimental conditions. Results showed that the poplar clone was able to grow efficiently in the contaminated soil and to promote microbial transformations of PCBs. Plants grown in the hypoxic condition promoted the formation of a higher number of higher-chlorinated PCBs and accumulated lower PCBs in their roots. However, plants in this condition showed a higher stress level than the other microcosms, producing higher amounts of phenolic, flavonoid and ascorbate contents, as a defence mechanism.
Modelling Effects of Rainfall Patterns on Runoff Generation and Soil Erosion Processes on Slopes
Authors: Ran Qihua , Wang Feng , Gao Jihui
Published: October 2019

Rainfall patterns and landform characteristics are controlling factors in runoff and soil erosion processes. At a hillslope scale, there is still a lack of understanding of how rainfall temporal patterns affect these processes, especially on slopes with a wide range of gradients and length scales. Using a physically-based distributed hydrological model (InHM), these processes under different rainfall temporal patterns were simulated to illustrate this issue. Five rainfall patterns (constant, increasing, decreasing, rising-falling and falling-rising) were applied to slopes, whose gradients range from 5° to 40° and projective slope lengths range from 25 m to 200 m. The rising-falling rainfall generally had the largest total runoff and soil erosion amount; while the constant rainfall had the lowest ones when the projective slope length was less than 100 m. The critical slope of total runoff was 15°, which was independent of rainfall pattern and slope length. However, the critical slope of soil erosion amount decreased from 35° to 25° with increasing projective slope length. The increasing rainfall had the highest peak discharge and erosion rate just at the end of the peak rainfall intensity. The peak value discharges and erosion rates of decreasing and rising-falling rainfalls were several minutes later than the peak rainfall intensity.
Spatial and Temporal Variations in Water Quality and Land Use in a Semi-Arid Catchment in Bolivia
Authors: Gossweiler Benjamin , Wesström Ingrid , Messing Ingmar , Romero Ana Maria , Joel Abraham
Published: October 2019

Increasing pressures caused by human activities pose a major threat to water availability and quality worldwide. Water resources have been declining in many catchments during recent decades. This study investigated patterns of river water quality status in a peri-urban/rural catchment in Bolivia in relation to land use during a 26 year period. Satellite images were used to determine changes in land use. To assess water quality, data in the dry season from former studies (1991–2014), complemented with newly collected data (2017), were analysed using the National Sanitation Foundation-Water Quality Index method and the Implicit Pollution Index method. The highest rates of relative increase in land use area were observed for forest, urban, and peri-urban areas, whereas relative decreases were observed for water infiltration zones, bare soil, shrubland, and grassland areas. The water quality indices revealed clear water quality deterioration over time, and from catchment headwaters to outlet. Statistical analyses revealed a significant relationship between decreasing water quality and urban expansion. These results demonstrate the need for an effective control programme, preferably based on water quality index approaches as in the present study and including continuous monitoring of runoff water, mitigation of pollution, and water quality restoration, in order to achieve proper water management and quality.
ONTOLOGY OF RESEARCH EFFICIENCY AND PROSPECTS OF LARGE-PANEL AND MONOLITHIC REINFORCED CONCRETE CONSTRUCTION OF RESIDENTIAL OBJECTS
Authors: Абакумов Р.Г. , Abakumov Roman , Авилова И. , Avilova I. , Абакумова М. , Abakumova Marina , Анисимов С. , Abakumov R.
Published: October 2019

The article is devoted to the issues of ontology, research of the effectiveness and prospects of large-panel and monolithic reinforced concrete construction of residential objects. Increasing demands on the effectiveness of multi-story housing construction determine the relevance of this study. Methodological foundations of substantiation and a comparative analysis of the effectiveness of monolithic and large-panel reinforced concrete multi-story construction are considered; prospects for the development of these housing technologies are justified. The article presents an analysis of the pros and cons of monolithic and large-panel reinforced concrete multi-storey construction of residential buildings, a comparative analysis of the processes of organization and technology of construction works. The problems of large-panel and monolithic construction are ranked according to the level of their materiality, measures to improve construction technologies are proposed. The comparative analysis of cost indicators of monolithic and panel construction on the basis of the data presented in collections of standards of the price of construction is presented. The need to introduce and update the normative documentation having legal force for regulation of the basic provisions of the modern improved large-panel construction is proved. Attention is paid to the design conditions for the manufacture and installation of the monolithic and large-panel multi-storey construction of residential buildings used in the methodological approach. Cases of expediency of comparison on criterion "duration of construction" are analyzed. The article proposes an original methodological approach for evaluating the effectiveness of monolithic and large-panel construction, taking into account the conditions and nature of the uncertainty of the initial data, which will justify the choice of the most effective options for the construction of multi-storey housing construction.
Analisis Investigasi Android Forensik Short Message Service (SMS) Pada Smartphone
Authors: Unik Mitra , Larenda Vicky Gema
Published: October 2019

Perangkat seluler (Smartphone) menjadi domain penting dalam berkomunikasi. Layanan Pesan Singkat (SMS) adalah layanan yang dapat digunakan utnuk mengirim pesan singkat berupa teks. Sebagian besar ponsel modern (smartphone) menyimpan SMS dalam memori internal, bukan pada kartu SIM sehingga dalam proses akuisisi kasus yang melibatkan materi pada SMS. Tujuan dari penelitian ini yakni menjelaskan proses penanganan bukti digital pada materi periksa yaitu SMS pada Smartphone, sehingga dapat menjadi barang bukti digital yang sah. Selanjutnya Penelitian ini juga untuk mendapatkan jejak – jejak digital komunikasi sms pada barang bukti Smartphone. Penelitian ini menunjukkan penggunaan metode forensik yang benar dapat menjaga integrasi data atau informasi yang diperoleh. Pada smartphone, seluruh aktivitas dari pesan disimpan dan diproses dalam database.  Database untuk sms terdapat dalam ditemukan  folderdata/com.android.providers.telephony/databases. Untuk file sms tersebut tersimpan pada mmssms.db yang terdapat didalam sub folder databases. Akuisis pada lokasi tersebut dengan menggunakan tool forensik mampu menemukan dan mengektraksi pesan masuk maupun pesan keluar yang terengkripsi, Metadata dari file mmssms.db berisikan nilai hash md5, kapasitas file, waktu pembuatan (created), waktu akses (accessed), waktu modifikasi (modified), waktu perubahan (changed). Selanjutnya pada penelitian ini  pencarian untuk menemukan kembali pesan SMS yang telah dihapus berhasil dilakukan.
Aplikasi Museum Sang Nila Utama Berbasis Mobile dengan Teknologi 3D Augmented Reality
Authors: Efendi Yoyon , Marinda Agung
Published: October 2019

Museum Sang Nila utama merupakan salah satu destinasi wisata di Provinsi Riau. Pada museum ini menampilkan 3.819 koleksi yang terdiri dari 10 jenis koleksi budaya. Hanya 175 pengunjung setiap bulannya yang didominasi oleh anak sekolah dan mahasiswa, disamping itu kurangnya penggunaan teknologi dalam pelayanan kepada pengunjung menjadi masalah pada museum. Diperlukan teknologi interaktif yang menarik dan memberikan dampak edukasi dalam menarik minat pengunjung ke museum. Metodologi penelitian ini menggunakan desain multimedia interaktif dengan metode prosedural. Mulai dari latar belakang, tujuan, pengumpulan data, konsep desain, pembuatan komponen utama dan aplikasi. Ditunjang dengan penggunaan perangkat mobile yang bisa digunakan dimanapun dan kapanpun. Aplikasi mobile yang ada saat ini mampu menampilkan infomasi wisata yang dapat diakses kapanpun lewat smartphone. Pembuatan diawali dengan mengumpulkan data dan gambar museum sebagai model menggunakan Software Sketch-up. Perancangan aplikasi augmented reality ini menggunakan software Unity dengan merancang Markerless yang dibuat menggunakan Vuforia. Fitur dalam aplikasi ini adalah menampilkan beberapa detail informasi Museum Sang Nila Utama yang akan ditampilkan secara 3D dengan animasi menggunakan Augmented Reality. Pengenalan aplikasi museum sang nila utama ini, berguna bagi masyarakat yang ingin berwisata agar dapat melihat benda-benda museum yang akan dikunjungi dan mengenal dengan lebih dekat objek museum tersebut. aplikasi Museum dapat berjalan dengan baik dengan menggunakan smartphone dengan spesifikasi tinggi yang mempunyai sensor Gyroscope
Incidencia de las características socioeconómicas en el rendimiento de los estudiantes – escala de Lectura – de segundo grado de secundaria de la educación básica en la Evaluación Censal de Estudiantes, según ámbito geográfico; Año 2015
Authors: Mendoza Bolo Martín Efraín
Published: October 2019

Desde una aproximación cuantitativa, es factible identificar factores asociados al logro de aprendizaje de los estudiantes no solo desde la institución educativa. Hay que considerar el entorno del estudiante. Y en el entorno del estudiante, necesariamente, se identifica como un indicador el estrato socio-económico de la familia del estudiante. Las características socioeconómicas se van a describir, según ámbito geográfico, desde un índice socioeconómico (elaborado por la Unidad de Medición de la Calidad) y la Pobreza Monetaria (índice unidimensional recabado por el Instituto Nacional de Estadística e Informática) y se va a indagar por su relación con el rendimiento de los estudiantes de segundo grado de secundaria de la educación básica. De la metodología estadística utilizada se desprende que: (i) mayor porcentaje de pobreza monetaria de una región está asociada a un mayor porcentaje de estudiantes en el nivel de logro previo al inicio en la escala de Lectura. (ii) mayor media ponderada de una región en la Escala de Lectura está asociada a un mayor índice socio económico. (iii) lo que prevalece, a nivel nacional, es la distancia - mensurable - entre el rendimiento escolar urbano y rural.
Modelos, discursos y perspectivas teóricas vigentes sobre discapacidad y deficiencia
Authors: Cenacchi Marisa Andrea
Published: October 2019

La discapacidad constituye un campo multidimensional complejo, atravesado por diversos discursos y teorías que han caracterizado a las formas de nombrar y conceptualizar a la alteridad deficiente en el tiempo. Considerando que los discursos construyen los objetos e influyen en los patrones de respuesta que se derivan o se implican en ellos, se presenta necesario deconstruir los conceptos heredados sobre dicho colectivo para habilitar la reflexión crítica sobre la vigencia explícita y/o implícita en los contextos educativos actuales y sus implicancias. En esta dirección, se presentan los principales modelos históricos y perspectivas teóricas críticas más significativas que abonan el campo. Si bien hay consenso en concebir a la discapacidad como una construcción social, se observan divergencias en la conceptualización de las deficiencias. Aún desde el modelo social, se sostiene una división teórica entre discapacidad y deficiencia que mantiene vigente el modelo médico, el concepto de déficit y su contracara, la normalidad. Por el contrario, diversas perspectivas críticas sustentadas en los estudios culturales, feministas, poscoloniales y teorías posmodernas, proponen suprimir esa división binaria y concebir también a la deficiencia como socialmente construida.
Design and Fabrication of Small Horizontal axis wind Turbine Rotors at Low Reynolds Number
Authors:   Assistant Professor of Mechanical engineering at the Dr. D. Y. Patil School of Engineering, Pune (India)., Chaudhary* Manoj Kumar , Subramanian Prakash ,   Professor and Dean in the School of Mechanical Engineering, Sathyabama University, India,
Published: October 2019

This research paper presents a design and fabrication of 100 Watt small horizontal axis wind turbine with 0.24 m and 0.35 m rotor radius and tip speed ratio varies from 2 to 10 was designed and development for operated at low wind speed with Low Reynolds number. In this paper, a new airfoil profile was designed and developed, it’s denoted by MK115. The numerical and experimental analysis for 6 airfoils using Xfoil software was conducted with a view to evaluating the lift-to-drag ratio and angle of attack by means of the SD7024, SG6043, NACA2412, S1210, E213, and New Airfoil (MK115) tested. In simulation, new MK115 airfoil was the most convenient airfoil to start high energy production for low-wind applications, on the Reynolds number 25000, 50000, 75000, and 100000 in improved airfoil (MK115) tests an Open type wind tunnel. An Xfoil analysis to obtain further data on the flow characteristics was also conducted. (MK115) airfoil have CLmax of 0.92, 1.25, 1.69, 1.67 at Re=25k, 50k, 75k and 100k for an angle of attack is equal to 100 .A maximum lift to drag ratio (Cl/Cd) of 7,16,50,63 at Re=25k, 50k, 75k and 100k for New airfoil (MK115) at angle of attack (α) =40, 40, 80, 80. SG6043, NACA2412, E214, SD7034, S1210 and MK115 (New airfoil) have the Maximum Cp=0.37, 0.36, 0.4, 0.39, 0.44, and 0.44 at tip speed ratio (λ) =6 for Reynolds number is equal to 100000. MK115, Maximum Torque obtained 0.9744 Nm, 1.389 Nm and 2.4866 Nm at blade angle =0, 15 and 30 degrees respectively. Power coefficient (Cp) =0.51, 0.5, 0.46, and 0.4 at Rotor shaft angle=00, 50, 100, and 150 respectively for the new airfoil results.
Evaluasi Website Pemerintah Kota Prabumulih Melalui Pendekatan Website Usability Evaluation (Webuse)
Authors: Aini Nur , Ibnu Zainal Rabin , Afriyudi Afriyudi
Published: October 2019

Kemajuan teknologi informasi dan komunikasi berperan penting pada pelaksanaan egovernment. Tujuannya adalah agar hubungan-hubungan tata Pemerintahan (governance) yang melibatkan Pemerintah, swasta dan masyarakat dapat tercipta sedemikian rupa sehingga lebih efektif, efisien, produktif dan responsif. Kota Prabumulih merupakan salah satu Daerah Otonom yang ada di Indonesia yang telah mengimplementasikan e-government melalui website, dengan alamat www.prabumulih.go.id. Penelitian ini mengacu pada pendekatan Website Usability Evaluation (WEBUSE) untuk mengevaluasi usability pada website Pemerintah Kota Prabumulih dengan dimensi Content, OrganisationandReadibility, Navigationand Link, User Interface Design serta Performanceand Effeciveness. Website Usability Evaluation (WEBUSE) berfokus pada pengembangan sistem evaluasi usability berbasis web dengan pendekatan tindakan subyektif yang melibatkan partisipasi dari pengguna untuk memberikan penilaian pada sebuah website. Pengembangan pendekatan Website Usability Evaluation (WEBUSE) sebagai standar pengukuran usability, dengan metode evaluasi kuisioner berbasis web yang memungkinkan pengguna untuk menilai usability dari website yang akan dievaluasi Tujuan dari penelitian ini adalah untuk mengetahui tingkat usability dari website Pemerintah Kota Prabumulih agar Pemerintah Kota Prabumulih dapat memberikan pelayanan yang optimal kepada pengguna.
Aplikasi Pengelolaan Data Penduduk Dengan Pemrograman PHP ( Studi Kasus : Kecamatan Suka Merindu)
Authors: Puspita Desi , Muslim Buhori , Aminah Stiti
Published: October 2019

Pengelolaan data penduduk di Kantor Camat Sukamerindu masih dilakukan secara manual yaitu dengan pencatatan data penduduk berdasarkan beberapa pengelompokkan kategori, yaitu pengelompokkan berdasarkan data lahir, data KTP (Kartu Tanda Penduduk), data kartu keluarga (KK), data pindah dan data meninggal. Semua data diperoleh dengan pendataan sensus oleh petugas kecamatan yang kemudian dibukukan pada buku pendataan Penduduk, arsip data berupa dokumen tersebut yang kemudian disalin kembali menggunakan aplikasi Microsoft Office Word dan Microsoft Office Excel. Tujuan penelitian adalah untuk menghasilkan aplikasi penegelolaan data penduudka dengan pemrograman PHP. Metode Pengembangan menggunakan Web Engineering antara lain : Communication, Planning, Modeling, Contruction dan Deployment. Hasil penelitian berupa Aplikasi Pengelolaan Data Penduduk untuk mempermudah dan mempercepat pengolahan data penduduk di Kecamatan Sukamerindu.
Optimalisasi Tata Kelola Teknologi Informasi Menggunakan Cobit 5
Authors: Rahmadayanti Fitria
Published: October 2019

Penelitian ini membahas tentang optimalisasi tata kelola teknologi informasi yang bertujuan untuk mendapatkan penilaian awal dari penerapan tata kelola teknologi informasi bedasarkan COBIT 5 dengan kondisi pelaksanaan yang sedang berjalan untuk meningkatkan nilai dari tata kelola teknologi informasi pada STT Pagar Alam. Pengumpulan data dengan melakukan observasi,wawancara dan kuesioner. Hasil pengelolaan data yang disesuaikan dengan domain COBIT 5 akan dijadikan nilai antar domain. Hasil perhitungan maturity level dari 8 responden pada proses hasil nilai maturity level tata kelola teknologi informasi yang saat ini menunjukan bahwa 9 domain mengarah pada level 2 (Repeatable) yaitu EDM04, APO01, APO04, APO07, BAI04, BAI10, DSS01, DSS03 dan MEA01. Hasil nilai maturity level saat ini menunjukan bahwa 2 domain mengarah pada level 3 (Defined) yaitu APO03 dan BAI09. Secara umum strategi perbaikan tata kelola teknologi informasi di Sekolah Tinggi Teknologi Pagar Alam maka proses dan kegiatan harus ditetapkan dan didokumentasikan, distandarisasikan dan diintegrasikan bersama.
Rancang Bangun Aplikasi Education Game Pembelajaran Bahasa Inggris Berbasis Multimedia Pada SMP Negeri 8 Pagaralam
Authors: Aminah Siti
Published: October 2019

Meningkatkan daya saing dan keunggulan kompetitif dari semua sektor, menuntut manusia untuk mempunyai kemampuan yang semakin berkualitas baik dalam bidang Sumber Daya Manusia (SDM), ilmu maupun teknologi , agar manusia tetap mampu bertahan dalam kehidupannya. salah satu sarana yang harus dikuasi dalam menghadapi era globalisasi tersebut adalah kemampuan berkomunikasi dengan Bahasa Inggris, sehingga Bahasa Inggris sangat ditekankan penguasaannya di Indonesia. Penelitian multimedia pembelajaran Bahasa Inggris pada SMP Negeri 8 Pagaralam ini bertujuan untuk mengembangkan dan mengevaluasi perangkat lunak multimedia pembelajaran Bahasa Inggris untuk siswa Sekolah Menengah Pertama. Metode yang dipakai meliputi Concept, Design, Material Collecting, Assembly, Testing dan Distribution. Aplikasi Education game diharapkan dapat membantu guru memberikan materi kepada siswa dengan cara belajar sambil bermain untuk meningkatkan belajar siswa dalam pelajaran Bahasa Inggris. Aplikasi ini dibangun dengan konsep multimedia yang ini sangat efektif dan dapat digunakan sebagai alat bantu yang berisi materi dan soal latihan Bahasa Inggris untuk siswa didalam pembelajaran Bahasa Inggris.
Rancang Bangun Website Dinas Pengendalian Penduduk Keluarga Berencana Pemberdayaan Perempuan Dan Perlindungan Anak Kota Pagar Alam
Authors: Arif Alfis
Published: October 2019

Tujuan penelitian ini adalah untuk merancang dan membangun website Dinas Pengendalian Penduduk Keluarga Berencana, Pemberdayaan Perempuan dan Perlindungan Anak Kota Pagar Alam menggunakan bahasa pemrograman PHP (Hyper Text Preprocessor), MYSQL sebagai database, dan xampp untuk web server, serta didukung dengan software yang lain seperti Adobe Dreamweaver, axure dan Google Chrome. Metodologi yang digunakan dalam perancangan website menggunakan metode web Engineering yang mempunyai 5 tahapan antara lain customer communication (komunikasi pelangan), planning (Perencanaan), modelling (Pemodelan), construction (Pembuatan), dan deployment (Penyebaran). Hasil yang di inginkan dengan adanya website Dinas Pengendalian Penduduk Keluarga Berencana Pemberdayaan Perempuan dan Perlindungan Anak Kota Pagar Alam dapat dengan mudah dalam melakukan pekerjaan terutama bagi petugas yang memberikan informasi serta memudahkan masyarakat dan Dinas Instansi Lainnya yang ingin mencari informasi tentang Dinas Pengendalian Penduduk Keluarga Berencana Pemberdayaan Perempuan dan Perlindungan Anak Kota Pagar Alam yang tepat dan akurat.
Sistem Informasi Pendataan Pengunjung Perpustakaan (Studi kasus : SMKN 1 Palembang)
Authors: Solikhin Imam , Sobri Muhammad , Saputra Riky
Published: October 2019

SMKN 1 Palembang merupakan salah satu lembaga pendidikan Sekolah Menengah Kejuruan Negeri yang merupkan sekolah unggulan di kota Palembang. Perpustakaan pada sekolah ini dilakukan menggunakan microsoft excel dan papan tulis dimana pemakaian tersebut kurang efisien dan belum tersedia sistem informasi pendataan pengunjung perpustakaan. Berdasarkan permasalahan tersebut maka perlu adanya pembuatan sistem berbasis web yaitu sistem informasi pendataan pengunjung perpustakaan. Metode yang digunakan dalam pembuatan sistem ini adalah menggunakan Model air terjun (waterfall) sering juga disebut model sekuensial linier (sequential linear) atau alur hidup klasik (classic life cycle). Adapun tahapan dari model ini adalah analisis, desain, pengodean, pengujian, dan tahap pendukung (support). Tujuan dari penelitian ini adalah untuk mempermudah dalam pendataan, pencarian data pengujung perpustakaan sehingga pekerjaan menjadi lebih efesien.