2,630 research outputs found
FINANCING COMMUNITY FACILITIES: A CASE STUDY OF THE PARKS AND RECREATIONAL GENERAL OBLIGATION BOND MEASURE OF SAN JOSE, CALIFORNIA
No full textThis study of the City of San Jose’s Parks and Recreation General Obligation (GO) Bond Measure seeks to identify the politics-, management-, and planning-related lessons learned by the City as it developed its community facilities using the GO bonds proceeds. The study finds that these lessons include: be conservative in what you promise the residents; be prepared for changes in economic environment by identifying supplementary funding sources should the primary source not yield adequate funds; make sure that the jurisdiction is organizationally capable of handling the increased workload; and prepare detailed project plans prior to the bond issuance.Community Infrastructure and Services; Municipal Bonds; Public Finance
Author Co-Citation Analysis (ACA): a powerful tool for representing implicit knowledge of scholar knowledge workers
No full textIn the last decade, knowledge has emerged as one of the most important and valuable organizational assets. Gradually this importance caused to emergence of new discipline entitled ―knowledge management‖. However one of the major challenges of knowledge management is conversion implicit or tacit knowledge to explicit knowledge. Thus Making knowledge visible so that it can be better accessed, discussed, valued or generally managed is a long-standing objective in knowledge management. Accordingly in this paper author co- citation analysis (ACA) will be proposed as an efficient technique of knowledge visualization in academia (Scholar knowledge workers)
Robert H. Thonhoff Collection, 1839-2013
No full textThe Robert H. Thonhoff Collection consists of research materials, newspapers, writings, artifacts, printed items, and published works representing the personal and professional activities of the Texas author, historian, teacher, and judge. The Collection also includes the papers of Thonhoff’s colleagues, fellow historians and authors: John Ogden Leal, Eric & Conchita Beerman, Ron Higginbotham, Maurice Ballard, Robin Ellis, Granville W. Hough, and Sr. Jose Ignacio Vasconcelos.
Much of the materials and research within the collection are photocopies.https://digitalcommons.tamusa.edu/findingaids/1179/thumbnail.jp
Author correction: obesity and ethnicity alter gene expression in skin
No full textDaniel Butler was omitted from the author list in the original version of this Article. The Author contributions section now reads: “J.M.W. designed, conducted, and contributed to the writing of the manuscript, prepared Fig. 1. S.G. evaluated and did statistical analysis on the skin and fat samples, prepared Figs. 2–9. J.O.A. evaluated and contributed to writing the manuscript. D.B prepared and sequenced DNA libraries for the skin microbiota data, and wrote the applicable parts of the methods section. C.M. analyzed and wrote up the skin microbiota data, prepared Fig. 10. All authors have read the manuscript and approved its contents. D.D. analyzed and wrote up the skin microbiota data. S.Z. ran and analyzed the skin metabolite data. J.S. assisted in design, analysis and wrote up the skin metabolite data. J.K. assisted in analysis write up of skin and fat data. J.L.B. assisted in analysis, interpretation and writing of the manuscript. P.R.H. designed, analyzed, interpreted the data, and was the primary author of the manuscript.” This has been corrected in the PDF and HTML versions of the Article, and in the accompanying Supplementary Information file.</p
Capulopsyche keralensis Unnikrishnan & Sobczyk & Jose & Jose 2023, sp. nov.
No full text<i>Capulopsyche keralensis</i> sp. nov. <p>(Figs. 1–10)</p> <p> <b>Type material.</b> <b>Holotype,</b> ♂ India, Kerala, Idukki, Nariyampara, 9.7424° N, 77.0939° E, 28.xi.2022, with larval case, leg. Usha A U (Fig. 1). Holotype will be deposited at the Zoological Survey of India Museum, Calicut, Kerala after submission of thesis of the first author and is at present at St. Thomas College, Thrissur.</p> <p> <b>Paratypes:</b> 2 ♀, (both with larval case) same data as holotype, 16.xii.2021, leg. Usha, A. U. (Fig. 2 a–b); 2♂ (both with larval case) same data as holotype, 30.xi.2022, leg. Usha, A. U.; additional 24 larval cases with pupal exuviae, same data as paratypes, leg. Usha, A. U.; 4 larval cases with pupal exuviae, Nelliyampathy, Palakkad, Kerala, 10.5013° N, 76.6768° E, 15.ii.2022, leg. Usha, A. U. (Figs. 2 a–b).</p> <p> <b>Diagnosis.</b> See the diagnosis for the genus.</p> <p> <b>Etymology.</b> The specific epithet <i>keralensis</i> is derived from the state of Kerala in India. The binomial <i>Capulopsyche keralensis</i> means ‘coffee psychid of Kerala’.</p> <p> <b>Description. Male</b>. Small-sized brownish black moth, wingspan 8–8.4 mm, body length 2.9 mm, forewing length 3.7mm including fringes, width 1.4 mm.</p> <p> <i>Head</i>. Vestiture yellowish brown, the base of the antennae thickly covered with dark yellowish-brown scales with bidentate apices. Antennae total length 1.7 mm, flagellomeres with 24 segments (Fig. 3). EI 1.13 mm.</p> <p> <i>Thorax</i>. Reddish brown, barely covered with scales on the dorsal side. Forewings covered with dark brown scales mixed with yellowish scales (Fig. 4). Scales broad (class 5–6), with 5-8 tips. The darker scales are mainly in the area of the front and outer margin and are partly arranged in irregular transverse bands. Fringes dark, wide, multi-pointed Hindwings dark greyish brown (Fig. 4), slightly lighter at the base. Width 1.4 mm, WI 2.6 mm. Wing venation as described for genus (Figs 5 a–b).</p> <p> <i>Abdomen</i>. Small, covered with blackish scales, length 1.6 mm.</p> <p> <i>Leg</i>. As described for the genus (Figs 6 a–c).</p> <p> <i>Genitalia</i>. Length 0.46 mm. Valva broad, curved inwardly, surmounting the posterior border of the tegumen, rounded distally, with numerous setae. Sacculus attached basally, ending in a strong curved spine. Phallus short, tubular, length 0.23 mm. (Fig. 7).</p> <p> <i>Female.</i> Length 2.5–3 mm. Body pale yellowish, around the abdomen loosely covered with very narrow, distally rounded brownish black scales. Eyes are very small, EI 2.3 mm. Legs short, reduced. Femur and tibia present, tarsi reduced to 2-3 segments, with two prominent claws, pale yellowish brown. Antenna short, filiform, 0.5 mm long, with 6-9 different scaled segments. The two basal segments are wider than the others. The distal end of the abdomen with long ovipositor, surrounded by an anal hair-tuft consisting of long golden-brown hairlike scales.</p> <p> <i>Larva</i>. (Fig. 8a and b) Body whitish cream, head distinctly sclerotized, first and second thoracic segment dark brown, strongly sclerotized dorsally, third thoracic segment more strongly sclerotized at the posterior margin. The abdominal segments were without sclerotized fields, the anal shield only slightly more sclerotized. Fully grown larva 4 mm in length.</p> <p> <i>Male and female pupal exuvia</i>. (Figs. 9 a–b) Dark golden-brown, male exuvia 3.0– 3.5mm in length and 1 mm in width, female exuvia 3.8–4.0 mm in length and 1.5 mm in width.</p> <p>A single row of spines dorsally on abdominal segments IV-VIII. The spines are directed backwards. Each row is comb-like and with numerous tiny hair-like spines. These spines probably serve to fix the pupa, and later to move it towards the exit and to hold it in place during emergence. In female pupae, the spines are shorter and reduced.</p> <p> <i>Larval case</i>. (Figs. 10 a–b) The larval case of this species is an elongated tube-like, wrapped with a sheath made up of bark tissues from the trees. An adult male case has a length of 12–13 mm, and the width of the outer sheath is 5–6 mm. Female case has a 15–16 mm length and 6–7 mm width, and the attached thread of each case is 7–9 mm long. Double-walled larval cases reported from Psychidae are the triangular larval cases of <i>Diplodoma</i> Zeller, 1852 which also hung up on threads. But in <i>Diplodoma</i>, the inner case has a distinctive triangular shape and is not visible from the outside. The outer case also has a triangular basic shape in cross-section.</p> <p> <b>Distribution.</b> Larval and pupal cases were collected from the coffee plantations of two localities from Kerala state, Nariyampara and Nelliyampathy of Idukki and Palakkad districts (Fig. 11) respectively. Pupal cases were seen hung on the twigs and und <i>er</i> side of leaves of the <i>Coffea arabica</i> plant (Fig. 12).Altitude at the sites of the collection was 960 m and 887 mASL. Both collection sites were situated inside private coffee plantations. The soil type of the region is described as ‘Clayey mixed ustic pale humults and rock land(very deep,well-drained,clayey soil on moderately steeply sloping high hills with thin vegetation, with moderate erosion, associated with rock outcrops and deep well-drained gravelly loam soils on gentle slopes) in Soil Maps of India (1996). In Nelliyampathy the summer temperature ranges from 20°C to 33°C and in winter15°C to28°C. In Nariyampara the average temperature is20°C.Summer temperatures range from 19°C to 29°C and winter temperatures are in the range of 15°C to 24°C. Average rainfall according to Centre for Earth Studies Resource Atlas of Kerala (1984) for South West Monsoon is 150 cm at Nariyampara and 250 cm at Nelliyampathy. For both sites, Northeast Monsoon was 40 cm and ‘Other rains’ was reported as 30–50 cm.</p> <p> <b>Biology.</b> The larvae of this species were found scraping on the bark of trees, they seem to feed on the bark tissues and depositions (algae) on the bark. The pupal cases are attached by a thread to the branches and underside of the leaves of plants (Fig. 12).</p> <p>The life span of an emerged male adult was up to 4 to 5 days. There are many eggs wrapped with silken cases were seen inside the female cases, and female adults lay eggs using their ovipositor inside the case after mating. Each yellow-coloured egg was found wrapped inside loosely spun silken cocoons. Eggs clustered together to form a group egg mass (Fig. 13) inside the sheath of the case. The larval case is made of silk and covered with bark tissues, and other substances present in the bark.</p> <p> <b>DNA barcode and phylogenetic analysis.</b> COI sequencing of the species collected from the two locations Nariyampara and Nelliyampathy was done and the sequences have 641 and 654 base pairs respectively. The sequences were uploaded in the NCBI GenBank with the accession numbers OP960232 and OP957497.</p> <p> The evolutionary relationship is depicted in the tree with the highest log likelihood (-3908,46) (Fig. 14). Based on the tree constructed using these two COI genes and other available species from GenBank and BOLD SYSTEMS, a hypothetical taxonomic unit representing a Taleporiinae ancestor splits into two branches with three genera <i>Bankesia</i>, <i>Pseudobankesia</i>, and <i>Taleporia</i> forming one group and <i>Sciopetris melitensis</i> forming the second group with <i>Capulopsyche keralensis</i> <b>gen. et sp. nov.</b>. The distance between <i>S. melitensis</i> and <i>Capulopsyche keralensis</i> <b>gen. et sp. nov.</b> indicates that they are two distinct species. In addition <i>S. melitensis</i> is a Mediterranean palaearctic species.</p>Published as part of <i>Unnikrishnan, Usha Ayyath, Sobczyk, Thomas, Jose, Roby Thekkudan & Jose, Joyce, 2023, Capulopsyche keralensis gen. et sp. nov., a new genus and species of the subfamily Taleporiinae (Lepidoptera: Psychidae) from Kerala, India, pp. 270-284 in Zootaxa 5258 (3)</i> on pages 272-282, DOI: 10.11646/zootaxa.5258.3.2, <a href="http://zenodo.org/record/7780180">http://zenodo.org/record/7780180</a>
Design Of Cybersecurity Laboratory Guides For The Specialization In Teleinformatics At The Universidad Francisco José De Caldas
No full textEn este documento se presenta el trabajo del diseño de la primera fase del laboratorio de ciberseguridad de la Especialización en Teleinformática de la Universidad Distrital Francisco José de Caldas; en primera instancia se da una presentación del trabajo en donde se contextualiza la problemática, la cual básicamente se centra en la falta de un componente práctico en la especialización en teleinformática en el área de la ciberseguridad, lo que impacta en el aprendizaje y exploración de los estudiantes de la especialización y más aun teniendo en cuenta que es en el campo de la teleinformática lo que infiere en una amplia relación con el uso computacional, cibernético, tecnológico y de telecomunicaciones, teniendo en cuenta los lineamientos de las certificaciones CySA y CISSP donde se cubrió principalmente el dominio Security Assessment and Testing para ello se utilizaron herramientas de código abierto Python y posteriormente se elaboraron guías de laboratorio para su entendimiento y desarrollo en donde cada una comprende un espacio de explicación del cómo se hace y para que se hace dicha práctica. El desarrollo de este trabajo se basó en lo planteado en el capítulo 10 del libro “Mastering Python for Networking and Security - Second Edition” del autor José Manuel Ortega, en donde básicamente ya entrega los códigos para correr en el sofware PyCharm. Sin embargo, adicional a esto, se estudiaron otras literaturas para poder comprender en qué consisten las vulnerabilidades tanto de XSS como de inyección SQL, lo que incluyo la implementación de simulaciones en el sofware GNS3 en donde se hizo uso de máquinas virtuales que cuentan con el sistema operativo Kali Linux y Ubuntu posteriormente poder organizar la temática en 4 prácticas. Cada una de las practicas está compuesta por un objetivo, una descripción, unos requisitos previos, la una parte teórica o explicativa, la ejemplificación utilizada por Jose Manuel Ortega en el libro, la práctica en GNS3, el análisis y el cómo poder mitigar el ataque.This document presents the work of the design of the first phase of the cybersecurity laboratory of the Specialization in Teleinformatics of the Universidad Distrital Francisco José de Caldas; In the first instance a presentation of the work is given where the problem is contextualized, which basically focuses on the lack of a practical component in the specialization in teleinformatics in the area of cybersecurity, which impacts the learning and exploration of the students of the specialization and even more taking into account that it is in the field of teleinformatics which infers in a broad relationship with the computational, cybernetic, technological and technological use, cybernetic, technological and telecommunications, taking into account the guidelines of the CySA and CISSP certifications where the Security Assessment and Testing domain was mainly covered, using open source Python tools and then laboratory guides were elaborated for its understanding and development, where each one includes a space of explanation of how it is done and what the practice is for. The development of this work was based on chapter 10 of the book “Mastering Python for Networking and Security - Second Edition” by the author José Manuel Ortega, where he basically delivers the codes to run in PyCharm software. However, in addition to this, other literature was studied in order to understand what are the vulnerabilities of both XSS and SQL injection, which included the implementation of simulations in the GNS3 software where virtual machines were used that have the operating system Kali Linux and Ubuntu then to organize the subject in 4 practices. Each of the practices is composed of an objective, a description, prerequisites, a theoretical or explanatory part, the exemplification used by Jose Manuel Ortega in the book, the practice in GNS3, the analysis and how to mitigate the attack
Agriculture and the transition to the market
No full textAgricultural sectors in Eastern and Central Europe are large so that changes in producer prices, farm employment, and land ownership affect substantial numbers of people. In the past, food in the region was politicized. For decades, governments of Eastern European countries and the USSR offered their citizens stable, subsidized food prices and a steadily improving diet in an effort to demonstrate the superiority of communism over capitalism. During the transition, the context has changed, but food remains politicized. Many consumers in the region are ill-prepared to pay the real costs of food, which are quite high. The task of reducing those costs will be difficult, involving restructuring of farms and fostering competition in processing and distribution. Management of the agricultural transition will affect the political sustainability of the process and influence agriculture's contribution to the growth of emerging market economies. Although the agricultural sector of Eastern and Central Europe is large, Soviet agriculture dwarfs it in its impact on the region and the world. A positive program to stop the decline in Soviet agriculture could contribute to economic growth and political stability. Failure to remedy the fundamental flaws in Soviet agriculture will speed the country's slide into poverty and ethnic turmoil - and undermine the efforts of Central and Eastern Europeans to succeed.Access to Markets,Environmental Economics&Policies,Economic Theory&Research,Agricultural Knowledge&Information Systems,Markets and Market Access
Static and Rotordynamic Characteristics of Liquid Annular Seals with a Circumferentially-Grooved Stator and Smooth Rotor using Three Levels of Circumferential Inlet-Fluid Rotation
No full textOriginal Equipment Manufacturers (OEMs) increase pump efficiency by reducing process fluid leakage from high-pressure stages into low-pressure ones. Smooth, liquid annular seals are used between pump stages to achieve this goal. In an effort to reduce leakage, OEMs sometimes machine circumferential grooves in the stators of annular liquid seals. Unfortunately, grooved seals do more than improve pump efficiency; they sometimes help degrade the system’s (pump, motor) rotordynamics, causing adverse effects that overshadow its helpful qualities. The rotordynamic community recognizes that fluid rotating in the shaft direction, at the entrance of the seal, is a source instability. The relevant literature lacks test results showing how high levels of inlet-fluid rotation affect a grooved seal’s performance, and how this effect changes as the shaft operates very close to the stator. The present study addresses this lack. Supplied with VG2 oil @ 46 ⁰C (115 ⁰F), the grooved seal used for this investigation has a length-to-diameter ratio L/D of 0.5, and a minimum radial clearance Cr of 203 ?m (8 mil). It features 15 circumferential grooves with a length Gl, and depth Gd of 1.52 mm (60 mils), which are equally-spaced by a land length of 1.52 mm (60 mils). The experimenter conducts tests at shaft angular speeds w of 2, 4, and 6 krpm, eccentricity ratios e0 of 0.00, 0.27, 0.53, and 0.80, and axial pressure drops ?P of 2.1, 4.1, 6.2, 8.3 bar (30, 60, 90, 120 PSI). Using 3 distinct inlet-fluid rotation inserts, the author induces increasing levels of circumferential fluid velocity at the seal’s inlet. Pre-swirl ratio (PSR) and outlet swirl ratio (OSR) are defined as the ratio of circumferential velocity at the seal’s inlet and outlet, respectively, to the rotor’s tangential surface velocity. To assess the seal’s static performance, the author measures leakage rate Q, eccentricity ratio e0, PSR, and OSR. To assess the seal’s dynamic performance, the author measures stator-rotor relative displacement, stator acceleration, and dynamic excitations. The author uses the dynamic measurements to calculate the seal’s rotordynamic coefficients and Whirl Frequency Ratio (WFR). Finally, the author calculates effective stiffness and damping coefficients to compare the grooved seal’s rotordynamic performance to that of a smooth seal with the same Cr, L/D, and operating conditions. In regards to static performance, the grooved seal’s leakage rate ranges from a low 15.64 LPM (4.13 GPM) at w = 6 krpm, and ?P = 2 bar (30 PSI), to a high 56.36 LPM (14.16 GPM) at w = 2 krpm, and ?P = 8 bar (120 PSI). When compared to the smooth seal, the grooved seal provides a 20% Q reduction at w = 2 krpm, and a 6% reduction at w = 6 krpm. Test results show all of the smooth seal’s rotordynamic coefficients increase markedly for e0 > 0.50, while those of the grooved seal generally remain unchanged through the entire eccentricity range. In essence, the grooves eliminate the seal’s dependency on eccentricity. Next, the grooved seal generally produces lower-magnitude cross-coupled stiffness and damping coefficient values than the smooth seal. Furthermore, the only positive effective stiffness values arise from the smooth seal operating at w = 2 krpm. The smooth seal consistently produces higher Keff than the grooved seal. Specifically, the smooth seal’s effective stiffness is higher than that of the grooved seal by at least 30% at w = 6 krpm, across the ?P range, for e0 = 0.00. Also, the grooved seal’s measured OSR is lower than that of the smooth seal by at least 10%, across the test matrix, suggesting that the grooves effectively slow down circumferential flow. For the grooved seal, the test program measures PSR values ranging from ?0 to 0.98, and OSR values bounded between 0.21 and 0.34. At w = 2 krpm, increasing PSR across its range reduces the grooved seal’s direct stiffness and damping, drives its cross-coupled stiffness and damping away from zero, increases its whirl frequency ratio (WFR) from ?0 to 0.8, and reduces its effective damping by a factor of approximately 3.5 when operating at ?P = 8.3 bar [120 PSI]. In general, the smooth seal produces larger effective stiffness and damping coefficients than the grooved seal, highlighting the grooves’ adverse effect on seal rotordynamics. Using XLCGvr, a code that calculates Q and rotordynamic coefficients for centered, circumferentially-grooved annular seals, the author performs a measurement-vs.-prediction comparison. The code over predicts Q by at least 15%. The stiffness, damping, and virtual mass coefficients are all under predicted by at least 50%. While the author used the code’s default empirical parameters, modifying them could have improved its accuracy
Explicitness of Task Instructions Supports Motor Learning and Modulates Engagement of Attentional Brain Networks
No full textMotor learning is a complex cognitive and motor process underlying neurorehabilitation. Cognitive (e.g., attentional) engagement is important for motor learning, especially early in the learning process. In this study, we investigated if task instructions enforcing the underlying task rule of a virtual sailing task modulate attentional engagement and motor learning. Our results suggest that enforcing the rule of a motor task using explicit knowledge or visual cues enhances motor learning compared with no enforcement of task rules. Further, training with visual cues may support early visuo-attentional engagement.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Human-Robot Interactio
Behavioural Intention in the M-commerce : A study of the usage of M-commerce applications in Indian market
No full textBackground: Online shopping through mobile has become very popular around us today because of the unique value proposition of providing easily personalized, local goods and services at any time and anywhere. However, still, there are some challenges for users to adopt m-commerce as whole. This thesis has done to find the factors of the acceptance of m-commerce in India. Purpose: The purpose of this study is to identify the determinants of the acceptance of m-commerce applications in India. Method: For this study, quantitative research was used to gather data. The author decided to reach the target groups for the survey through different social media platforms and the survey questions were based on the user acceptance model. Conclusion: The results show that M-commerce has developed in India but still people are not aware about to use this because of the lack of literacy, this may not be barrier for mobile adoption but it’s a huge challenge for the m-commerce where consumers may need to enter their username and password and these should not be compromised to third party
- …
