bluuebunny/crossref_metadata_2025 huggingface dataset:
PAR1 (Protease-Activated Receptor 1) Pepducin Therapy Targeting Myocardial Necrosis in Coronary Artery Disease and Acute Coronary Syndrome Patients Undergoing Cardiac Catheterization
Authors: Kuliopulos Athan , Gurbel Paul A. , Rade Jeffrey J. , Kimmelstiel Carey D. , Turner Susan E. , Bliden Kevin P. , Fletcher Elizabeth K. , Cox Daniel H. , Covic Lidija ,   on behalf of the TRIP-PCI Investigators
Published: October 2020

Objective:

Arterial thrombosis leading to ischemic injury worsens the prognosis of many patients with cardiovascular disease. PZ-128 is a first-in-class pepducin that reversibly inhibits PAR1 (protease-activated receptor 1) on platelets and other vascular cells by targeting the intracellular surface of the receptor. The TRIP-PCI (Thrombin Receptor Inhibitory Pepducin in Percutaneous Coronary Intervention) trial was conducted to assess the safety and efficacy of PZ-128 in patients undergoing cardiac catheterization with intent to perform percutaneous coronary intervention.

Approach and Results:

In this randomized, double-blind, placebo-controlled, phase 2 trial, 100 patients were randomly assigned (2:1) to receive PZ-128 (0.3 or 0.5 mg/kg), or placebo in a 2-hour infusion initiated just before the start of cardiac catheterization, on top of standard oral antiplatelet therapy. Rates of the primary end point of bleeding were not different between the combined PZ-128 doses (1.6%, 1/62) and placebo group (0%, 0/35). The secondary end points of major adverse coronary events at 30 and 90 days did not significantly differ but were numerically lower in the PZ-128 groups (0% and 2% in the PZ-128 groups, 6% and 6% with placebo, p=0.13, p=0.29, respectively). In the subgroup of patients with elevated baseline cardiac troponin I, the exploratory end point of 30-day major adverse coronary events + myocardial injury showed 83% events in the placebo group versus 31% events in the combined PZ-128 drug groups, an adjusted relative risk of 0.14 (95% CI, 0.02–0.75);
P
=0.02.

Conclusions:

In this first-in-patient experience, PZ-128 added to standard antiplatelet therapy appeared to be safe, well tolerated, and potentially reduced periprocedural myonecrosis, thus providing the basis for further clinical trials.

Registration:

URL:
https://www.clinicaltrials.gov
. Unique identifier: NCT02561000.
Left Ventricular Enlargement, Cardiac Resynchronization Therapy Efficacy, and Impact of MultiPoint Pacing
Authors: Varma Niraj , Baker James , Tomassoni Gery , Love Charles J. , Martin David , Sheppard Robert , Niazi Imran , Cranke Gary , Lee Kwangdeok , Corbisiero Raffaele
Published: October 2020

Background:

Left ventricular (LV) epicardial pacing results in slowly propagating paced wavefronts. We postulated that this effect might limit cardiac resynchronization therapy efficacy in patients with LV enlargement using conventional biventricular pacing with single-site LV pacing, but be mitigated by LV stimulation from 2 widely spaced sites using MultiPoint pacing with wide anatomic separation (MPP-AS: ≥30 mm). We tested this hypothesis in the multicenter randomized MPP investigational device exemption trial.

Methods:

Following implant, quadripolar biventricular single-site pacing was activated in all patients (n=506). From 3 to 9 months postimplant, among patients with available baseline LV end-diastolic volume (LVEDV) measures, 188 received biventricular single-site pacing and 43 received MPP-AS. Patients were dichotomized by median baseline LVEDV indexed to height (LVEDVI
Median
). Outcomes were measured by the clinical composite score (primary efficacy end point), quality of life, LV structural remodeling (↑EF >5% and ↓ESV 10%) and heart failure event/cardiovascular death.

Results:

LVEDVI
Median
was 1.1 mL/cm. Baseline characteristics differed in patients with LVEDVI
>Median
versus LVEDVI
≤Median
. Among patients with LVEDVI
>Median
, biventricular single-site pacing was less efficacious compared to patients with LVEDVI
≤Median
(clinical composite score, 65% versus 79%). In contrast, MPP-AS programming generated greater clinical composite score response (92% versus 65%,
P
=0.023) and improved quality of life (−31.0±29.7 versus −15.7±22.1,
P
=0.038) versus biventricular single-site pacing in patients with LVEDVI
>Median
. Reverse remodeling trended better with MPP-AS programming. In patients with LVEDVI
>Median
, heart failure event rate increased following the 3-month randomization point with biventricular single-site pacing (0.0150±0.1725 in LVEDVI
>Median versus
−0.0190±0.0808 in LVEDVI
≤Median
,
P
=0.012), but no heart failure event occurred in patients with MPP-AS programming between 3 and 9 months in LVEDVI
>Median
. All measured outcomes did not differ in patients receiving MPP-AS and biventricular single-site pacing with LVEDVI
≤Median
.

Conclusions:

Conventional biventricular single-site pacing, even with a quadripolar lead, has reduced efficacy in patients with LV enlargement. However, the greatest response rate in patients with larger hearts was observed when programmed to MPP-AS pacing.
Social Media Influence Does Not Reflect Scholarly or Clinical Activity in Real Life
Authors: Zenger Brian , Swink J. Michael , Turner Jeffrey L. , Bunch T. Jared , Ryan John J. , Shah Rashmee U. , Turakhia Mintu P. , Piccini Jonathan P. , Steinberg Benjamin A.
Published: October 2020

Background:

Social media has become a major source of communication in medicine. We aimed to understand the relationship between physicians’ social media influence and their scholarly and clinical activity.

Methods:

We identified attending US electrophysiologists on Twitter. We compared physician Twitter activity to (1) scholarly publication record (h-index) and (2) clinical volume according to Centers for Medicare and Medicaid Services. The ratio of observed versus expected (obs/exp) Twitter followers was calculated based on each scholarly (K-index) and clinical activity.

Results:

We identified 284 physicians, with mean Twitter age of 5.0 (SD, 3.1) years and median 568 followers (25th, 75th: 195, 1146). They had a median 34.5 peer-reviewed articles (25th, 75th: 14, 105), 401 citations (25th, 75th: 102, 1677), and h-index 9 (25th, 75th: 4, 19.8). The median K-index was 0.4 (25th, 75th: 0.15, 1.0), ranging from 0.0008 to 29.2. The median number of electrophysiology procedures was 77 (25th, 75th: 0, 160) and evaluation and management visits 264 (25th, 75th: 59, 516) in 2017. The top 1% electrophysiologists for followers accounted for 20% of all followers, 17% of status updates, had a mean h-index of 6 (versus 15 for others,
P
=0.3), and accounted for 1% of procedural and evaluation and management volumes. They had a mean K-index of 21 (versus 0.77 for others,
P
<0.0001) and clinical obs/exp follower ratio of 17.9 and 18.1 for procedures and evaluation and management (
P
<0.001 each, versus others [0.81 for each]).

Conclusions:

Electrophysiologists are active on Twitter, with modest influence often representative of scholarly and clinical activity. However, the most influential physicians appear to have relatively modest scholarly and clinical activity.
Taxonomic revision of Schausiana Viette with two new species from Guatemala and notes on biogeography and correlated tectonics (Lepidoptera: Hepialidae)
Authors: MIELKE CARLOS G.C. , GREHAN JOHN R. , MONZÓN-SIERRA JOSÉ
Published: October 2020

We morphologically validate the genus Schausiana Viette, 1950 as a monophyletic group comprising five species—S. phalerus (Druce, 1887) comb. n. and S. trojesa (Schaus, 1901) from Mexico, S. chalciope sp. n. and S. maishei sp. n. from Guatemala and S. pharus (Druce, 1887) comb. n. from Mexico to Costa Rica. Potential morphological monophyly of the genus is supported by the unique shared presence of specialized scales spine-like, elongate spinous, or piliform, located along the forewing veins. We investigate possible close phylogenetic relationships of this genus with the Mexican and Central American genera Pallas C. Mielke & Grehan, 2015, and Phassus Walker, 1856, and the southeastern Brazilian genus, Phthius C. Mielke & Grehan, 2017. Also discussed are the shared presence of several characters supporting the morphological monophyly of Schausiana, Phassus, and Pallas as ‘phassine’ Hepialidae. The distribution range of Schausiana is bounded in its northwestern range by the Guerrero terrane. Other than the widespread S. pharus with a disjunct record from Costa Rica, the southern distribution boundary corresponds to the Motagua-Polochic Fracture Zone in Guatemala. We suggest that the ancestral range of Schausiana did not include the Guerrero terrane and was possibly also absent from the Chocos Block (Honduras, El Salvador, Nicaragua) and the Costa Rica-Panama arc of Central America. Further divergence of Schausiana is predicted to have been influenced by tectonic events during late Cretaceous or early Cenozoic time. Colour photos are presented for all species for the first time. Holotypes of S. maishei, sp. n., and S. chalciope, sp. n., are deposited in the Universidad del Valle de Guatemala, Guatemala.
A revision of the Australian cicada genus Punia Moulds, 2012 (Cicadidae: Cicadettinae: Cicadettini) with the description of four new species
Authors: MOULDS M.S.
Published: October 2020

Punia minima (Goding & Froggatt, 1904) from the Northern Territory is redescribed and the female described for the first time. Four new species found across the monsoonal north of Australia are documented: P. hyas sp.n., P. limpida sp.n., P. kolos sp.n. and P. queenslandica sp.n. A key to all five species is provided and their phylogenetic relationships discussed.
Substantiation of the Parameters of Universal Scatterer for Bulk Materials
Authors: Nukeshev Sayakhat , Eskhozhin Dzhadyger , Mamyrbayeva Indira , Karaivanov Dimitr , Gubasheva Almagul , Tleumbetov Kaldybek , Kosatbekova Dinara
Published: October 2020

In the paper it is noted that the even distribution of seed and granules of mineral fertilizers inside the soil allows increasing their efficiency and obtaining a potential crop yield. For an even distribution of seeds of grain crops, herbs and fertilizer granules inside the soil, the use of a universal conical scatterer is proposed. The purpose of the study is to substantiate the parameters of a universal conical scatterer, which ensures an even distribution of metered bulk and hard-flowing materials, in particular, seed and granules of mineral fertilizers inside the soil. The results of studies of the conical scatterer of an opener allow to establish that to obtain an even distribution of materials in the direction transverse to the translational speed it is necessary to cut an elliptical section of the scatterer. The cutting plane should be perpendicularto the translational speed (movement direction) at an angle between it and the central axis of the cone, lower thanΠ2. The optimal parameters of the conical scatterer are calculated on the basis of the evenness of the particle descending along the conegeneratrix. The revealed dependence of the particle falling time on the initial dimensions of the scatterer made it possible to establish its optimal parameters: the height of the cut-section 6-14 mm; the cone base diameter 100-140 mm. The universal conical scatterer can be used in any industry that requires even scattering of metered bulk and hard-flowing materials.
A Proposed Model for Trust Management: Insights from a Simulation Study in the Context of Cloud Computing
Authors: Mamidisetti Gowtham , Makala Ramesh
Published: October 2020

In computing systems, one of the centric topics entails cloud computing. This dominance is attributed to the crucial role that the concept plays in the daily lives of individuals, especially in the wake of the increasing adoption of technology by individuals and organizations. Indeed, the motivation behind the establishment, adoption, and implementation of cloud computing has been attributed to the need to offer low-cost and quick consumer service provision, as well as data manipulation and storage. However, the cloud environment continues to face security threats, a trend that informs the need for further investigations and analyses that could provide room for new system improvements. The current simulation study presents a dynamic model for security management in a cloud computing environment, with the central parameter involving electronic trust. Imperatively the proposed study examines interactions between the data provider and the data owner, as well as the end user. Specifically, the proposed model is that which ensures that for authentication purposes and access permissions, there is a continuous update of trust values. From the results, the model is flexible relative to the provision of dynamic access control, a positive trend that points to its promising level of efficiency.
Impacts of Coloring Activities on the Decrease of Fear Behavior Due to Hospitalization in Children
Authors: Juliani Vera Evelyn , Bakar Abu , Suarilah Ira
Published: October 2020

Fear behavior can happen to preschool children after hospitalization. Fear behavior after hospitalization can be caused by several things such as psychological trauma caused by the invasive procedure, unfamiliar hospital environment, and unfriendly medical staff. This study aims to explain the impact of coloring activity on the decrease of fear behavior in preschool children. This study used a Quasi-Experimental Pre-test Post-test Non-Equivalent Control Group Design method. The population is preschool children hospitalized in IRNA Children room Haji General Hospital Surabaya. The sampling technique of this study is purposive sampling with 33 respondents. The independent variable is the picture coloring activity. The dependent variable is the fear behavior response on preschool children caused by hospitalization. The data were collected using a questionnaire and analyzed using Wilcoxon and Mann Whitney Test withα= 0,05 significance. The study found there is a significant decrease in fear behavior of nine preschool children after the intervention (p= 0,001), and there is not significant respond change on fear behavior of the control group (p= 0,059). This study concludes that picture coloring activity can decrease the fear behavior response of preschool children. Suggestions for further research are expected to examine other effects of coloring pictures activities such as biological responses in preschool children undergoing hospitalization and researching other factors that influence fear behavior.
The Effect of Maternal Perception on Preschool-Aged Children’s Nutritional Status
Authors: Fitriana Dona Muji , Armini Ni Ketut Alit , Mishbahatul Eka
Published: October 2020

Nutritional status is an important matter that needs to be paid attention during preschool. Malnutrition during this period will cause irreversible damage which cannot be recovered as an adult. The role of mothers in fulfilling the nutritional status of preschoolers is essential. Maternal perceptions influence the intentions and behavior of mothers in the nutritional needs of preschool children. This study aims to determine the effect of maternal perceptions on the development of children’s nutritional status at preschool age. This research was conducted at Slendro 1 Kindergarten, Slendro 2 Kindergarten, and Slendro Village PAUD Post, Gesi District, Sragen Regency (Central Java, Indonesia). The research used descriptive correlational design with cross-sectional approach. A total of 61 female student guardians who have preschool age children were used as samples. This study utilized two variables, namely maternal perception (support and barrier) as the independent variable and the nutritional status of preschool children as the dependent variable. The data were collected using a questionnaire and anthropometric measurements (BW/BH), then the data were analyzed using the Sperman Rho test(α≤ 0.05). The results show that 59% of mothers had high perceptions and 41% of mothers had low perceptions of the nutritional status of preschool children. Statistical test results show that there is a significant relationship(ρ= 0.029) with a correlation coefficient (r= 0.280) between maternal perceptions and the nutritional status of children at preschool age. Perception has a huge influence on a mother’s intention in improving the nutritional status of a child. A positive maternal perception of the fulfillment of a child’s nutritional needs at preschool age can improve a child’s nutritional status.
Study of Family Support Correlation in Affecting Breast Cancer Patient’s Compliance in the Chemotherapy Program in Indonesia National Hospital
Authors: Harmaniati  , Kusumaningrum Tiyas , Amin Ni Ketut Alit
Published: October 2020

Chemotherapy is a treatment for patients with breast cancer. When the chemotherapy is undergoing, patients often feel uncomfortable due to pain and psychological disorders post chemotherapy. Family and environmental support can be a contributing factor to the life quality of breast cancer patients. This study aims to investigate the family support relationship to the compliance of breast cancer patients in conducting chemotherapy programs. This study was conducted using cross sectional approach. This Study observed the family support relationship in the event of instrumental, informational, emotional, and self-esteem against the compliance of chemotherapy program for breast cancer patient. Using sampling technique purposive sampling, the number of patients with 83 respondents. Retrieving sample data based on the primary data source of the patient’s family support questionnaire and patient compliance questionnaires in undergoing chemotherapy programs. The results showed 41 respondents (49.4%) quite obedience in chemotherapy programs has enough family support. The number of 2 respondents (2.4%) which disobedient has less family support. Statistical results showed a significant correlation between family support and the compliance of chemotherapy programs withP =0.024 andr= 0.248 meaning there was a fairly positive correlation. It can thus be concluded that the family support in the instrumentals, informational, emotional, and self-esteem affects the compliance of chemotherapy programs for breast cancer.
The Effect of Breast Treatment and Oxytocin Massage on the Production of Breast Milk
Authors: Amaliasari Ganis , Harmayetty  , Pradanie Retnayu
Published: October 2020

Breastfeeding is a normal process following childbirth. However, post partum mothers often complain several problems during breastfeeding. A problem that is often complained of by post partum mothers is the lack of breast milk supply. The lack of breast milk production will interfere with the process of breastfeeding, which is one of the causing factors as to why certain mothers do not exclusively breastfeed. To find out the effect of breast care and oxytocin massage on increasing milk production in post partum mothers. This research uses a quasi-experimental design. The population in this study were all primiparous post partum mothers with lactation period of 0-7 days. A total of 20 mothers participated in this study and was divided into two groups namely the treatment group and the comparison group. The samples were obtained using purposive sampling. There are independent variables (breast care and oxytocin massage) and dependent variables (milk production). Data collection was performed using a questionnaire, then analyzed using the test Wilcoxon Signed Rank Test and Mann Whitney Test. Wilcoxon Signed Rank Test Results of breast milk production of (p= 0.003) in the treatment group, while in the comparison group the breast milk production was (p= 0.014). The Mann Whitney Test results show thatp= 0.004. It can be concluded that breast care and oxytocin massage effectively increase the milk production of post partum mothers. The therapy is recommended for health professionals to apply breast care and oxytocin massage to increase the milk production of post partum mothers who have less milk production. Combination of breast care and oxytocin massage have more effective benefits in increasing the breast milk production of postpartum mothers.
The Impact of High Cortisol Level in Increasing Incidence of Infection Cases Among Acute Stroke Patients
Authors: Handaayani Indah Ari , Hamdan Muhammad , Sugianto Paulus , Sani Achmad Firdaus , Ardhi Mohammad Saiful , Rahardjo Joseph Eko Wahono
Published: October 2020

Infection in the stroke was a treatment major problem, because it determines the prognosis. In the acute phase of stroke, high level cortisol may lead to a decreased immune system and patients tend to be more susceptible to infection. The correlation of serum cortisol level among acute stroke patients with incidence of infection was not fully investigated. The aim of this study was to determine the relationship between initial serum cortisol levels and the incidence of infection in acute stroke patients. A prospective cohort study was conducted on 32 of acute stroke patients who admitted in RSUD Dr. Soetomo Surabaya during the period December 2015 to February 2016. Total of 2 cc to the venous blood within 48 hours in onset of stroke being examined of serum cortisol. During the 7 days of hospitalization, the patient was observed for signs of infection, both clinically and the investigation in accordance with the operational definition. In the infected group there were 8 people (50%) with high cortisol levels (p = 0.015; RR 15,000; 95% IK 1.583-143,171); 6 people were (50%) using urine catheter (p= 0.049; RR 6,667; 95% IK 1.067-30.085); And 6 people were (54.5%) using NGT (p= 0,035; RR 7,200; 95% IK 1.311-39,557). In multivariate analysis obtained that Odds Ratio (OR) 15,468 based on high cortisol and OR 7,469 based on NGT usage. High cortisol levels and the use of NGT had the effect on the incidence of infection in acute stroke.
Correlation Between Zinc Level and Cognitive Function Among the Pre Elderly
Authors: Prayanti Diorita Dyah , Hamdan Muhammad
Published: October 2020

Zinc is required for various physiological and biochemical functions in the body. Although it is needed in the physiological processes of the body, deficiencies and excess levels of Zinc can harm humans. Excess levels of Zinc in the body can cause Alzheimer’s disease while Zinc deficiency can cause impaired cognitive function. This study aims to determine the correlation between Zinc levels with cognitive function among the pre-elderly in Bulak Village, Surabaya. The subjects were all elderly patients who visited Integrated Health Service Post of Elderly in Bulak, Kenjeran, and Surabaya from April 2015 to July 2015. The subjects were divided into 2 groups, the case group consisted of subjects with TMT-B >180 seconds and the control group consisted of subjects with TMT-B ≤180 seconds. Zinc levels of subjects were examined in hair using the technique of atomic absorption spectrometer (AAS). Data analysis was using Chi-Square test with SPSS 21.0 program. There was no correlation between Zinc levels with cognitive function either statistically or clinically (p= 0.777, RO= 1.174, CI = 0.387-3.650). In conclusion, Zinc levels were not correlated with cognitive function among the pre-elderly in Bulak Village, Surabaya.
A Chance Constrained Approach on Goal Programming Model to Evaluate Transportation Planning
Authors: Ifa Dame , Sitompul Opim Salim , Sutarman  , Nababan Esther
Published: October 2020

Chance Constrained Programming (CCP) as one of the special parts of mathematical programming in which its application in industrial and academic fields is currently needed to cover the problem of uncertainty in making decisions. The CCP technique is an efficient and easy tool to apply for data involved to random parameters by assuming random parameters must follow a stable normal distribution. In selection process, budget goal, making the most benefits, and achieving minimum travel are considered as a random parameter and solved by using CCP. Goal Programming (GP) model, will be used to model the rail system transportation project selection process, because allocating resources into all projects at the same time requires multi-criteria decision making techniques. The use of the CCP in the GP model provides flexibility in determining the level of opportunity to avoid mistakes in making decisions on the objective function. In other words, the reliability of random parameters can be considered more flexible in detail. In addition, the deviation variable in GP can give more information to decision makers to consider project selection. The results obtained indicate a balance between the use of the budget and the costs, including achieving the minimum risk evaluated in the AHP So that in this model the evaluation of transportation planning for social, economic impacts and the effectiveness of the use of the budget can be optimized properly.
Land Use Change Based on Analysis of the Carrying Capacity of Environment on Small Island (A Case Study in Weh Island, Aceh Province, Indonesia)
Authors: Arif Azhar Abdullah , Machdar Izarul , Azmeri  , Achmad Ashfa
Published: October 2020

With some soils being developed and used increasingly, an outcome that has been reported entails deterioration. In this study, the main aim was to evaluate how the issues of land cover and land use affect Indonesia’s Weh-Sabang Island. The period of investigation was 10 years, stretching between 2008 and 2018, with particular emphasis on ArcGIS and Google Earth images. The parameter under examination entailed the LULC changes. The primary motivation lay in the need for ArchGIS map development using the AHP (analytical hierarchy process). The land diversity index approach was employed to discern changes in various areas, perceived to have undergone those changes for years. The research area constituted the green spaces and protected areas, especially changes that had occurred in these regions due to built-in operations via tourism and other environmental developments. When the land diversity index criterion is incorporated, it is notable that there can be observations in the number of areas, as well as the nature of changes that such areas might have undergone for years-or with time. Important to note is that most of the land use changes are occurring in costal zones, compared to the case of hilly zones, with the context of Weh Island, relative to the LULC images obtained, unexceptional. As such, efforts ought to be targeted or directed at controlling or regulating changes in land use patterns, especially by emphasizing zones that have undergone direct land degradation. There is also a need to analyze how sustainable the process of using the water resource is in the context of Sabang City. This study’s findings demonstrated that there were significant changes from the previously vacant land to significant land use practices, stretching from hilly to coastal zones in the context of Weh Island.
Multi-Wideband Band Pass Filter Using Quad Cross-Stub Stepped Impedance Resonator
Authors: Denny Yus Rama , Firmansyah Teguh , Ruhiat Yayat , Herudin  , Chairunissa Cindy , Rafsyam Yenniwarti , Handoko Erfan , Isnaeni  , Aritonang Sovian
Published: October 2020

This simulation study involved the use of a QC-SSIR (quad cross-tub stepped impedance resonator) to examine the behavior and performance of the MW-BPF (multi-wideband band pass filter). To evaluate the performance of the proposed model, it was compared to the case of the conventional resonator. In the results, MW-BPF was found o exhibit a superior performance in terms of the ease of fabrication, good transmission coefficients, and a wider fractional bandwidth. For the filter structure analysis, this study incorporated the ABCD matrix, with the design of the MW-BPF also based on the FR4 microstrip. The experimental conditions and parameters were set in such a way that for the substrate, tan δ = 0.0265, thickness = 1.6 mm, andεr =4.4, and thicknessh= 1.6 mm. at 2.58 GHz, 1.71 GHz, and 0.81 GHz, the proposed QC-SSIR-based MW-BPF achieved transmission coefficients/fractional bandwidths of 1.93 dB/13.9%, 1.49 dB/18.7%, and 0.60 dB/49.3%, respectively. Relative to the filter size reduction, the FQC-SSIR (folded quad cross-tub impedance resonator) was incorporated. The resultant observations indicated a possibility of BPF size reduction up to 46%. Also, the proposed framework was found to yield (at 2.62, 1.80, and 0.82 GHz) 1.76 dB/12.5%, 1.21 dB/17.7%, and 0.57 dB/49.6% transmission coefficient/fractional bandwidths, respectively. It is also worth indicating that the filter employed LTE2600, WCDMA1800, and GSM800. Therefore, the model exhibited a good agreement, which was depicted by the comparison outcomes between the measured values and the simulated values. Hence, the proposed design was found to be valid and reliable.
Split Channel Two-Tone On-Off Keying for Internet of Things Communication in Fading Channel
Authors: Lee Gun-Ho , Jeong Eui-Rim
Published: October 2020

In medical treatment, healthcare and home appliances, the demand for Internet of Things (IoT) services is increasing in urban areas. However, in fading environments of urban area, the existing IoT communication system can degrade severely. The purpose of this paper is to develop a new IoT communication technology that improves communication performance in fading channels. IoT communication systems are aiming at low power long distances. In addition, the amount of data transmission is small due to the service requirements. To achieve this goal, existing IoT communication modems are designed with narrowband signals. However, narrowband signals may cause performance degradation in a frequency selective fading channel environments in urban area. In this paper, we propose a split channel two tone OOK (SC-TT-OOK) that implements on-off keying (OOK) using two tones. Unlike the existing OOK by using one tone, SC-TT-OOK uses spaced two tones to improve communication performance in fading channels. The conventional OOK method has a similar characteristic to that of the existing IoT modems with a narrow bandwidth spectrum. The proposed SC-TT-OOK is OOK using two separated tones. Since the proposed modulation uses two tones, it requires twice the frequency resources of the conventional OOK. However, if the frequencies of the two tones are sufficiently spaced apart, frequency diversity gain can be achieved in the frequency selective fading channels, and communication reliability can be improved in urban environments. The proposed SC-TT-OOK is examined through computer simulation. The simulation results show that the proposed scheme outperforms the conventional scheme in the frequency selective fading channel. Therefore, the proposed method can be used as an alternative technique for IoT modem in urban environments.
A Model for Improving Information Protection Service Cost Estimates: Focused on Public Institutions in Korea
Authors: Oh Sangik , Park Namje
Published: October 2020

This paper proposes a new model to efficiently calculate the cost for information protection services provided to operate the information system operating in the state agency safely from outside cyber hacking. It identified the existing research status on cost calculation of information protection services and analyzed the cases of application in the U.S., Japan and South Korea. Based on this, an improved model was presented compared to the current model. In this paper, In this paper, based on the results of the existing study, the calculation model of improved information protection service cost is studied by applying PDCA Model, NIST cybersecurity framework and service level agreements. The improved information protection service cost calculation model could be used as an objective calculation tool in public institutions, and the policy suggestion method could be established by this system.
Optimization Model Under Uncertainty for Competitive Merchant to Customer Behavior in Financial Technology Using Business Metrics
Authors: Syah Rahmad , Nasution Mahyuddin K. M. , Nababan Erna Budhiarti , Efendi Syahril
Published: October 2020

Uncertainty of diverse merchant business actors is very much characteristic nowadays; its variants very much depend on the type of business actors, especially digital businesses. In this study we refer to E-Metrics, where every merchant and biller are netted in user behavior activities under the term Financial Technology “acquisition.” Business actors tend to continue to compete in prioritizing innovation so that a Knowledge Acceleration Estimator (KAE) model is needed as performance to facilitate the acceleration of sustainable business under uncertainty in business opportunities, in challenges of electronic kind, or so-called e-metrics.
Review and Analysis of Energy-Efficient Routing in Wireless Sensor Networks
Authors: Kocherla Raviteja , Vatambeti Ramesh
Published: October 2020

This review paper focuses on different studies that have examined this subject involving the development and implementation of different energy-efficient routing protocols. Specifically, the paper seeks to unearth issues such as the methodologies adopted, the proposed energy-efficient routing models in different scenarios and applications, and the scholars’ results regarding the impact of the proposed algorithms on the network lifetime of WSNs. From the results, a common trend and emerging theme that have been established demonstrate that when energy-efficient routing systems are implemented, they are likely to minimize the energy consumption of WSN networks. With energy consumption minimized, the resultant efficiency with which the energy-efficient routing protocols are associated contributes to an increase in the network lifetime.
Smart Instrumentation Based Electromechanical Influences on Material Properties for Ultrasonically Joined Conductive Wires—A Study
Authors: Rahul S. G.
Published: October 2020

This paper presents the investigations to analyze the microstructural behavior, mechanical properties of ultrasonically welded dissimilar Al–Cu wires deployed for electrical appliances and automobile parts. The study emphasizes on the metallurgical characterization to access the
uniformity during the material diffusion and the corresponding changes in their mechanical properties during the high vibrational heat. The experimental trials to join the wire materials are performed based on L9 Taguchi Design of Experiments. The Levenberg-Marquardt algorithm based Artificial
Neural Network Optimization is implemented to predict and validate the strength and joint resistance of the welded wires to obtain optimal parametric window. Experimental validations are carried out by performing destructive testing. Subsequently, the welded samples are also examined through
microscopic studies to investigate the surface morphologies. It is observed that there is a good agreement between the predicted and experimental results yielding an optimal parametric window. The results also indicate that Ultrasonic welding of dissimilar Al–Cu joints is more feasible
for their application in electrical and automobile applications.
Type II Half Logistic Linear Failure Rate Distribution with Application
Authors: Aldahlan Maha A.
Published: October 2020

In recent years, several of new improved probability distributions have been discovered from the current distributions to facilitate their applications in various areas. A new three-parameter model extended from the linear failure rate model, the so called the type II half logistic
linear failure rate distribution. Some mathematical properties of the new distribution are proposed. Explicit expressions for the moments, probability weighted moments and order statistics are calculated. Maximum likelihood estimation method is assessed to estimate the model parameters are
presented. The superiority of the new distribution is illustrated with an application to one real data set.
Rapid Droplet Coalescence Produced by Thunder
Authors: Temkin Samuel
Published: October 2020

This article considers a simple model to numerically study whether thunderclaps can produce droplet coalescence in natural clouds due to the relative velocities they induce between different-sized droplets. This mechanism is evaluated for a cloud that has both a relatively small liquid content and a narrow droplet size distribution. The cloud is idealized as a static environment, consisting only of water droplets and air, in which no changes occur except those produced by thunderclaps. All other coalescence mechanisms, such as gravitational effects and air turbulence, are disregarded. The thunderclap models we use mimic the profile of an actual clap far from a lightning discharge. Their acoustic power spectrum is obtained analytically and found to peak in the infrasonic frequency range, in agreement with some experimental results. The velocities of the droplets during the passage of a clap are obtained from their equations of motion using drag coefficients that apply in the conditions imposed by the clap. The possibility that droplet growth may occur as a result of the claps is studied by integration of the discretized coalescence equation. For the case considered, the results show that a thunder event, consisting of several consecutive claps, can produce in a few seconds significant changes in the mean droplet diameters. Such times are orders of magnitude shorter than those required by other coalescence mechanisms to produce similar effects.
Atlantic Multidecadal Variability and North Atlantic Jet: A Multimodel View from the Decadal Climate Prediction Project
Authors: Ruggieri Paolo , Bellucci Alessio , Nicolí Dario , Athanasiadis Panos J. , Gualdi Silvio , Cassou Christophe , Castruccio Fred , Danabasoglu Gokhan , Davini Paolo , Dunstone Nick , Eade Rosemary , Gastineau Guillaume , Harvey Ben , Hermanson Leon , Qasmi Saïd , Ruprich-Robert Yohan , Sanchez-Gomez Emilia , Smith Doug , Wild Simon , Zampieri Matteo
Published: October 2020

The influence of the Atlantic multidecadal variability (AMV) on the North Atlantic storm track and eddy-driven jet in the winter season is assessed via a coordinated analysis of idealized simulations with state-of-the-art coupled models. Data used are obtained from a multimodel ensemble of AMV± experiments conducted in the framework of the Decadal Climate Prediction Project component C. These experiments are performed by nudging the surface of the Atlantic Ocean to states defined by the superimposition of observed AMV± anomalies onto the model climatology. A robust extratropical response is found in the form of a wave train extending from the Pacific to the Nordic seas. In the warm phase of the AMV compared to the cold phase, the Atlantic storm track is typically contracted and less extended poleward and the low-level jet is shifted toward the equator in the eastern Atlantic. Despite some robust features, the picture of an uncertain and model-dependent response of the Atlantic jet emerges and we demonstrate a link between model bias and the character of the jet response.
Fractal and Polarization Properties of Light Scattering Using Microcrystalline Pharmaceutical Aggregates
Authors: Aldama Jennifer , Shi Zhenqi , Ortega-Zúñiga Carlos , Romañach Rodolfo J. , Lysenko Sergiy
Published: October 2020

Fractal and polarization analysis of diffusively scattered light is applied to determine the complex relationship between fractal dimension of structural morphology and concentration of chemically active ingredients in two pharmaceutical mixture systems including a series of binary mixtures of acetaminophen in lactose and three multicomponent blends with a proprietary active ingredient. A robust approach is proposed to identify and filter out multiple- and single-scattering components of scattering indicatrix. The fractal dimension extracted from scattering field reveals complex structural details of the sample, showing strong dependence on low-dose drug concentration in the blend. Low-angle diffraction shows optical “halo” patterns near the angle of specular reflection caused by light refraction in microcrystalline aggregates. Angular measurements of diffuse reflection demonstrate noticeable dependence of Brewster's angle on drug concentration. It is shown that the acetaminophen microcrystals produce scattered light depolarization due to their optical birefringence. The light scattering measurement protocol developed for diffusively scattered light by microcrystalline pharmaceutical compositions provides a novel approach for the pattern recognition, analysis and classification of materials with a low concentration of active chemical ingredients.
Factors Associated With High School Students’ Alcohol Consumption Across Three European Countries
Authors: Janáček Julius , Rybáček Václav , Ulrichová Michaela
Published: October 2020

Based on a survey conducted in high schools in three countries—the Czech Republic, Italy, and Slovenia—this study investigates the factors influencing alcohol consumption among high school students. Our analysis is based on four linear regression models, with the dependent variable, Alcohol Consumption—one model for each country and a joint model for all countries. The results show that there are large differences as far as drinking habits and patterns across countries are concerned. Whereas the patterns of the Czech students are similar to those of Slovenian students, the behavior of the Italians shows more distinctive features. Factors positively related to alcohol consumption include cigarette smoking, marijuana consumption, time spent with friends (positive relations), sport activities, art engagement, and gender-female (negative relation). As factors regarding students’ psychological state are insignificant, it may be concluded that alcohol consumption among teenagers from our sample is a phenomenon that is insensitive to changes in character but sensitive to social environment and life circumstances. Our results can serve as a map showing various drinking patterns. Applicable results can be deduced.
Psychometric Validation of a Measure Assessing Functional Limitations of Students With Disabilities: An Adaptation of the World Health Organization Disability Assessment Schedule 2.0
Authors: Umucu Emre , Schlegelmilch Amanda , Brinck Emily , Hartman Ellie , Iwanaga Kanako , Estala Veronica , Roskowski Matt , Lee Beatrice , Anderson Catherine A. , N. Tansey Timothy
Published: October 2020

The 12-item World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) has been used to assess functional impairments in various disability populations and has been shown to be applicable to the youth population. The purpose of the study was to evaluate the psychometric properties of the World Health Organization Disability Assessment Schedule II–Youth Version (WHODAS-Y). Results of the study revealed a two-factor solution, including the socio-cognitive index and self-care index. The WHODAS-Y measurement appears to be a reliable and valid measure of function impairment in transition-age youth with disabilities in a community setting. This assessment tool can be integrated in vocational rehabilitation practices and guide rehabilitation counselors in identifying needs and facilitators related to education and employment-related services, as well as understanding health care needs in youth with disabilities.
Theory-Practice Divides and the Persistent Challenges of Embedding Tools for Social Justice in a STEM Urban Teacher Residency Program
Authors: Mattheis Allison , Nava Lucrecia , Beltran Maria , West Erick B.
Published: October 2020

This study examined how the concept of social justice was operationalized in the university coursework of students enrolled in an urban teacher residency program that aims to diversify the teaching corps and prepare secondary STEM teachers for urban classroom environments. Based on analysis of 39 syllabi and interviews with nine faculty members, we found that challenges in embedding social justice theory with STEM content knowledge were attributable to the lack of a shared definition among program faculty, and external pressures imposed by state teacher credentialing requirements. We conclude with recommendations for practice by suggesting ways that rigorous STEM content knowledge can be combined with locally and historically contextualized social critique and tools for change in order to support teachers in enacting justice-oriented practice in communities.
Enrique Mendieta and the Ghosts of Leftism Past: The Aftereffects of Mexico’s Dirty War in Élmer Mendoza’s Detective Fiction
Authors: Walonen Michael K.
Published: October 2020

The continuance of the revolutionary strife of Mexico’s dirty war into the present day, both as a legacy and in the form of its survivors, resonates strongly in the work of the novelist Élmer Mendoza. Mendoza’s early novel Janis Joplin’s Lover uses its protagonist to portray a 1970s Mexico torn between a revolutionary path of collective social amelioration and the corrupt, mercenary self-interest embodied by Mexican narco-traffickers, with the country pushed toward the latter through the repression of student activists by the Mexican state. Mendoza’s five subsequent novels that center on the exploits of detective Lefty Mendieta focus on the fallout from this period of repression, using the figure of Lefty’s brother Enrique, a former leftist guerrilla, to represent a lost (but not totally lost) egalitarian and socially just alternative to the neoliberal political economy that has ravaged the living conditions of most Mexicans for almost four decades.

La continuada lucha revolucionaria en el marco de la guerra sucia que ha caracterizado a México hasta la hoy en día, tanto como legado a la vez que en la presencia de sus sobrevivientes, resuena poderosamente en la obra del novelista Élmer Mendoza. La primera novela de Mendoza, Janis Joplin’s Lover, utiliza a su protagonista para retratar a México en la década de 1970, dividido entre un camino revolucionario de mejora social colectiva y el corrupto y mercenario interés propio encarnado por los narcotraficantes mexicanos; el país se ve empujado en esta última dirección a través de la represión de los activistas estudiantiles por parte del Estado. Las cinco novelas posteriores de Mendoza, centradas en las hazañas del detective Lefty Mendieta, se centran en las consecuencias de este período de represión y emplean la figura de Enrique, el hermano de Lefty, un ex guerrillero izquierdista, para representar la pérdida (si bien no total) de una alternativa igualitaria y socialmente justa en oposición a la economía política neoliberal que mermado las condiciones de vida de la mayoría de los mexicanos durante casi cuatro décadas.
Unreal, unsheltered, unseen, unrecorded: The multiple invisibilities of LGBTQI+ homeless youth
Authors: Norris Michelle , Quilty Aideen
Published: October 2020

There is significant research evidence which demonstrates that LGBTQI+ young people experience higher rates of homelessness than their straight and cis peers. However, estimates of the scale of their over representation in homelessness vary significantly. This partially reflects difficulties in identifying and researching LGBTQI+ homeless youth due to their invisibility within homeless services. Drawing on in-depth interviews with homeless LGBTQI+ youth in Dublin and other Irish cities and with policy makers, homeless service providers and advocacy group representatives, this article reflects on the causes and implications of this invisibility. As its title suggests, the article identifies four interrelated causes of the invisibility – the unreal, unsheltered, unseen and unrecorded nature of LGBTQI+ youth homelessness. The article examines how these factors individually and collectively perpetuate the invisibility of LGBTQI+ homeless youth, impede their access to services for homeless people and reduce the likelihood that homeless services will be tailored to meet their needs and enable them to successfully exit homelessness.