bluuebunny/crossref_metadata_2025 huggingface dataset:
What is a minimal clinically important difference for clinical trials in patients with disorders of consciousness? a novel probabilistic approach
Authors: Monti Martin M. , Spivak Norman M. , Edlow Brian L. , Bodien Yelena G.
Published: August 2023

Over the last 30 years, there has been a growing trend in clinical trials towards assessing novel interventions not only against the benchmark of statistical significance, but also with respect to whether they lead to clinically meaningful changes for patients. In the context of Disorders of Consciousness (DOC), despite a growing landscape of experimental interventions, there is no agreed standard as to what counts as a minimal clinically important difference (MCID). In part, this issue springs from the fact that, by definition, DOC patients are either unresponsive (i.e., in a Vegetative State; VS) or non-communicative (i.e., in a Minimally Conscious State; MCS), which renders it impossible to assess any subjective perception of benefit, one of the two core aspects of MCIDs. Here, we develop a novel approach that leverages published, international diagnostic guidelines to establish a probability-based minimal clinically important difference (pMCID), and we apply it to the most validated and frequently used scale in DOC: the Coma Recovery Scale–Revised (CRS-R). This novel method is objective (i.e., based on published criteria for patient diagnosis) and easy to recalculate as the field refines its agreed-upon criteria for diagnosis. We believe this new approach can help clinicians determine whether observed changes in patients’ behavior are clinically important, even when patients cannot communicate their experiences, and can align the landscape of clinical trials in DOC with the practices in other medical fields.
Efficacy of Wex-cide 128 disinfectant against multiple prion strains
Authors: Baune Chase , Groveman Bradley R. , Hughson Andrew G. , Thomas Tina , Twardoski Barry , Priola Suzette , Chesebro Bruce , Race Brent
Published: August 2023

Prion diseases are transmissible, fatal neurologic diseases that include Creutzfeldt-Jakob Disease (CJD) in humans, chronic wasting disease (CWD) in cervids, bovine spongiform encephalopathy (BSE) in cattle and scrapie in sheep. Prions are extremely difficult to inactivate and established methods to reduce prion infectivity are often dangerous, caustic, expensive, or impractical. Identifying viable and safe methods for treating prion contaminated materials is important for hospitals, research facilities, biologists, hunters, and meat-processors. For three decades, some prion researchers have used a phenolic product called Environ LpH (eLpH) to inactivate prions. ELpH has been discontinued, but a similar product, Wex-cide 128, containing the similar phenolic chemicals as eLpH is now available. In the current study, we directly compared the anti-prion efficacy of eLpH and Wex-cide 128 against prions from four different species (hamster 263K, cervid CWD, mouse 22L and human CJD). Decontamination was performed on either prion infected brain homogenates or prion contaminated steel wires and mouse bioassay was used to quantify the remaining prion infectivity. Our data show that both eLpH and Wex-cide 128 removed 4.0–5.5 logs of prion infectivity from 22L, CWD and 263K prion homogenates, but only about 1.25–1.50 logs of prion infectivity from human sporadic CJD. Wex-cide 128 is a viable substitute for inactivation of most prions from most species, but the resistance of CJD to phenolic inactivation is a concern and emphasizes the fact that inactivation methods should be confirmed for each target prion strain.
Comparing feedforward neural networks using independent component analysis on hidden units
Authors: Satoh Seiya , Yamagishi Kenta , Takahashi Tatsuji
Published: August 2023

Neural networks are widely used for classification and regression tasks, but they do not always perform well, nor explicitly inform us of the rationale for their predictions. In this study we propose a novel method of comparing a pair of different feedforward neural networks, which draws on independent components obtained by independent component analysis (ICA) on the hidden layers of these networks. It can compare different feedforward neural networks even when they have different structures, as well as feedforward neural networks that learned partially different datasets, yielding insights into their functionality or performance. We evaluate the proposed method by conducting three experiments with feedforward neural networks that have one hidden layer, and verify whether a pair of feedforward neural networks can be compared by the proposed method when the numbers of hidden units in the layer are different, when the datasets are partially different, and when activation functions are different. The results show that similar independent components are extracted from two feedforward neural networks, even when the three circumstances above are different. Our experiments also reveal that mere comparison of weights or activations does not lead to identifying similar relationships. Through the extraction of independent components, the proposed method can assess whether the internal processing of one neural network resembles that of another. This approach has the potential to help understand the performance of neural networks.
Testing for SES differences in the responsiveness of educational expectations in a twin design
Authors: Ruks Mirko
Published: August 2023

In this article I test whether students’ educational expectations respond to prior academic performance and whether this responsiveness varies by socio-economic status (SES). The responsiveness of high-SES students’ expectations may be lower as suggested by the compensatory advantage mechanism or higher because of alienation processes of low-SES students. However, the association between achievement and expectations may be in part spurious because of unobserved social and genetic confounders. This issue is largely ignored by previous research. Therefore, in this paper I estimate behavioral genetic twin models that take into account the possible confounding of the responsiveness of expectations to performance by unobserved genetic and social influences. While students’ expectations respond to prior performance, this responsiveness is reduced by more than half once unobserved genetic and social confounders are accounted for. Also, SES differences in responsiveness to performance are completely accounted for by high-SES students’ expectations being less responsive to prior levels of cognitive ability. So, this study shows the relevance of taking different types of confounding into account when studying the formation of educational expectations.
Risk factors for Lyme disease resulting from residential exposure amidst emerging Ixodes scapularis populations: A neighbourhood-level analysis of Ottawa, Ontario
Authors: Logan James J. , Hoi Amber Gigi , Sawada Michael , Knudby Anders , Ramsay Tim , Blanford Justine I. , Ogden Nicholas H. , Kulkarni Manisha A.
Published: August 2023

Lyme disease is an emerging health threat in Canada due to the continued northward expansion of the main tick vector, Ixodes scapularis. It is of particular concern to populations living in expanding peri-urban areas where residential development and municipal climate change response impact neighbourhood structure and composition. The objective of this study was to estimate associations of socio-ecological characteristics with residential Lyme disease risk at the neighbourhood scale. We used Lyme disease case data for 2017–2020 reported for Ottawa, Ontario to determine where patients’ residential property, or elsewhere within their neighbourhood, was the suspected site of tick exposure. Cases meeting this exposure definition (n = 118) were aggregated and linked to neighbourhood boundaries. We calculated landscape characteristics from composited and classified August 2018 PlanetScope satellite imagery. Negative binomial generalized linear models guided by a priori hypothesized relationships explored the association between hypothesized interactions of landscape structure and the outcome. Increases in median household income, the number of forest patches, the proportion of forested area, forest edge density, and mean forest patch size were associated with higher residential Lyme disease incidence at the neighbourhood scale, while increases in forest shape complexity and average distance to forest edge were associated with reduced incidence (P<0.001). Among Ottawa neighbourhoods, the combined effect of forest shape complexity and average forest patch size was associated with higher residential Lyme disease incidence (P<0.001). These findings suggest that Lyme disease risk in residential settings is associated with urban design elements. This is particularly relevant in urban centres where local ecological changes may impact the presence of emerging tick populations and how residents interact with tick habitat. Further research into the mechanistic underpinnings of these associations would be an asset to both urban development planning and public health management.
Cost-effectiveness of trastuzumab deruxtecan for previously treated HER2-low advanced breast cancer
Authors: Shi Demin , Liang Xueyan , Li Yan , Chen Lingyuan
Published: August 2023

Objective

The clinical efficacy and safety profile of trastuzumab deruxtecan (T-DXd) have been demonstrated in previously treated patients with human epidermal growth factor receptor 2 (HER2)-low advanced breast cancer (BC). It is, however, necessary to evaluate the value of T-DXd considering both its clinical efficacy and its cost, given that it is high. This study aimed to evaluate the cost-effectiveness of T-DXd versus chemotherapy in patients with previously treated HER2-low advanced BC.

Methods

We used a partitioned survival model that included three mutually exclusive health states. The patients in the model were identified based on their clinical characteristics and outcomes from the DESTINY-Breast04. Probabilistic and one-way sensitivity analyses were performed to evaluate the model’s robustness. Subgroup analyses were also conducted. The measures included costs, life years, quality-adjusted life-years (QALYs), incremental cost-effectiveness ratios (ICERs), incremental net health benefits (INHBs), and incremental net monetary benefits (INMBs).

Results

The ICERs of T-DXd vs. chemotherapy were $83,892/QALY, $82,808/QALY, and $93,358/QALY in all HER2-low advanced BC patients, HER2-positive (HER2+) advanced BC patients and HER2-negative (HER2-) advanced BC patients, respectively. In one-way sensitivity analysis, the cost of T-DXd and hazard ratio (HR) for progression-free survival (PFS) and overall survival (OS) were also identified as key drivers. If the price of T-DXd decreased to $17.00/mg, $17.13/mg, and $14.07/mg, it would be cost-effective at a willingness to pay (WTP) threshold of $50,000/QALY in all HER2-low advanced BC patients, HER2+ advanced BC patients and HER2- advanced BC patients, respectively. At a WTP threshold of $100,000/QALY, the probability of T-DXd being cost-effective was 81.10%, 82.27%, and 73.78% compared to chemotherapy for all HER2-low advanced BC patients, HER2+ advanced BC patients and HER2- advanced BC patients, respectively. Most subgroups of patients with HER2+ disease had a cost-effectiveness probability of > 50%.

Conclusion

From a third-party payer’s perspective in the United States, the findings of the cost-effectiveness analysis revealed that, at the current price, T-DXd is a cost-effective alternative to chemotherapy for patients with prior HER2-low advanced BC, at WTP threshold of $100,000/QALY.
Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay
Authors: Pañella Pedro G. , Mailhos Ary , Bonifacino J. Mauricio , Lezama Felipe
Published: August 2023

Flat-top hills (“cerros chatos”) stand out as distinct relief formations in northeastern Uruguay. These are elevations of about 300 m above mean sea level, generally formed by Jurassic sandstones, characterized by a flat top, a stone ledge of variable height, and a concave or stepped hillside. Little is known about the vegetation atop these hills, which consists mostly of sparse grasslands with little to no grazing. As such, the aim of this study is to make the first characterization of the vegetation at the top of flat-top hills. In order to achieve this, we describe the vegetation of three emblematic hills in the region: Del Medio Hill, Vigilante Hill and Miriñaque Hill. Plant species composition surveys were carried out in spring 2021 and autumn 2022, identifying and delineating distinct vegetation formations. 315 species belonging to 63 vascular plant families were identified, with Poaceae and Asteraceae ranking as the top two families in terms of species richness. Among the species found, 31 are included in the list of priority species for conservation in Uruguay. Furthermore, Achyrocline marchiorii represents a new record for the Uruguayan flora. Two vegetation formations were present in all three hills: the ledge formation, associated with the rocky outcrops around the perimeter of the hilltops; and the crest formation, associated with the deep soils and low rock cover at the center of the hilltops. A shoulder formation of colluvial origin was also identified in the Miriñaque Hill, showing moderate slope and rockiness. The uncommon flora found on top of these hills is threatened due to the rapid increase of afforestation in the region, and the presence of the alien species Cynodon dactylon, Melinis repens and Pinus taeda. Such evidences emphasize the need for urgent management plans to protect these hills, which are not covered by any conservation program on a national or global scale.
Uniqueness for volume-constraint local energy-minimizing sets in a half-space or a ball
Authors: Xia Chao , Zhang Xuwen
Published: August 2023

In this paper, we prove a Poincaré-type inequality for any set of finite perimeter which is stable with respect to the free energy among volume-preserving perturbation, provided that the Hausdorff dimension of its singular set is at most

n
-
3

{n-3}

. With this inequality, we classify all volume-constraint local energy-minimizing sets in a unit ball, a half-space or a wedge-shaped domain. In particular, we prove that the relative boundary of any energy-minimizing set is smooth.
Touchdown solutions in general MEMS models
Authors: Clemente Rodrigo , Marcos do Ó João , da Silva Esteban , Shamarova Evelina
Published: August 2023

We study general problems modeling electrostatic microelectromechanical systems devices
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A Discontinuous Galerkin and Semismooth Newton Approach for the Numerical Solution of Bingham Flow with Variable Density
Authors: González-Andrade Sergio , Méndez Silva Paul E.
Published: August 2023

This paper is devoted to the study of Bingham flow with variable density.
We propose a local bi-viscosity regularization of the stress tensor based on a Huber smoothing step.
Next, our computational approach is based on a second-order, divergence-conforming discretization of the Huber regularized Bingham constitutive equations, coupled with a discontinuous Galerkin scheme for the mass density.
We take advantage of the properties of divergence-conforming and discontinuous Galerkin formulations to effectively incorporate upwind discretizations, thereby ensuring the stability of the formulation.
The stability of the continuous problem and the fully discrete scheme are analyzed.
Further, a semismooth Newton method is proposed for solving the obtained fully discretized system of equations at each time step.
Finally, several numerical examples that illustrate the main features of the problem and the properties of the numerical scheme are presented.
On split generalized equilibrium problem with multiple output sets and common fixed points problem
Authors: Godwin Emeka C. , Mewomo Oluwatosin T. , Alakoya Timilehin O.
Published: August 2023

In this article, we introduce and study the notion of split generalized equilibrium problem with multiple output sets (SGEPMOS). We propose a new iterative method that employs viscosity approximation technique for approximating the common solution of the SGEPMOS and common fixed point problem for an infinite family of multivalued demicontractive mappings in real Hilbert spaces. Under mild conditions, we prove a strong convergence theorem for the proposed method. Our method uses self-adaptive step size that does not require prior knowledge of the operator norm. The results presented in this article unify, complement, and extend several existing recent results in the literature.
Synthesis and characterization of proton-conducting membranes based on bacterial cellulose and human nail keratin
Authors: Gustian Irfan , Simalango Anastasia , Triawan Deni Agus , Hadi Putranto Agus Martono , Asdim
Published: August 2023

In this work, proton-conducting membranes have been prepared by entrapping human nail keratin in bacterial cellulose at different mass ratios. Bacterial cellulose was obtained by fermenting coconut water with the Acetobacter xylinum bacterium, and keratin was obtained from human nails. The membrane is produced by the blending and heating process at a temperature of 40°C. FTIR spectroscopy showed the interaction between bacterial cellulose and human nail keratin at a peak area of 3,000–2,000 cm−1. The X-ray diffraction analysis has confirmed the effect of keratin mass on the diffractogram pattern of the membranes. The maximum proton conductivity has been measured as 4.572 × 10−5 S·cm−1 at 25°C and produces a degree of swelling of 32.50% for a mass ratio of bacterial cellulose/human nail keratin 4:1.
Modernization of Chinese Film: Nationality, Periodicity, and Current Issues
Authors: Wang Yichuan
Published: August 2023

The nationality of modernization of Chinese film focuses on the concept of yingxi (影戏, the name for film in Chinese early years), family ethic, classical intellectual traditions, legendary stories, and “lingering favor” (yuwei 余味). The periodicity of modernization of Chinese film can be divided into three periods: the modernization of Chinese film phase I, the modernization of Chinese film phase II, and the modernization of Chinese film phase III, respectively representing how the Chinese nation has stood up, grown prosperous, and become strong. The current issues for modernization of Chinese film lies in expressing the five dimensions of the Chinese path to modernization, and the ongoing advancement of the modernization of Chinese film III. Chinese film studies should also seize this new opportunity to reexamine itself.
Impedance Rhythms in Human Limbic System
Authors: Mivalt Filip , Kremen Vaclav , Sladky Vladimir , Cui Jie , Gregg Nicholas M. , Balzekas Irena , Marks Victoria , St Louis Erik K. , Croarkin Paul , Lundstrom Brian Nils , Nelson Noelle , Kim Jiwon , Hermes Dora , Messina Steven , Worrell Samuel , Richner Thomas , Brinkmann Benjamin H. , Denison Timothy , Miller Kai J. , Van Gompel Jamie , Stead Matthew , Worrell Gregory A.
Published: August 2023

The impedance is a fundamental electrical property of brain tissue, playing a crucial role in shaping the characteristics of local field potentials, the extent of ephaptic coupling, and the volume of tissue activated by externally applied electrical brain stimulation. We tracked brain impedance, sleep–wake behavioral state, and epileptiform activity in five people with epilepsy living in their natural environment using an investigational device. The study identified impedance oscillations that span hours to weeks in the amygdala, hippocampus, and anterior nucleus thalamus. The impedance in these limbic brain regions exhibit multiscale cycles with ultradian (∼1.5–1.7 h), circadian (∼21.6–26.4 h), and infradian (∼20–33 d) periods. The ultradian and circadian period cycles are driven by sleep–wake state transitions between wakefulness, nonrapid eye movement (NREM) sleep, and rapid eye movement (REM) sleep. Limbic brain tissue impedance reaches a minimum value in NREM sleep, intermediate values in REM sleep, and rises through the day during wakefulness, reaching a maximum in the early evening before sleep onset. Infradian (∼20–33 d) impedance cycles were not associated with a distinct behavioral correlate. Brain tissue impedance is known to strongly depend on the extracellular space (ECS) volume, and the findings reported here are consistent with sleep–wake–dependent ECS volume changes recently observed in the rodent cortex related to the brain glymphatic system. We hypothesize that human limbic brain ECS changes during sleep–wake state transitions underlie the observed multiscale impedance cycles. Impedance is a simple electrophysiological biomarker that could prove useful for tracking ECS dynamics in human health, disease, and therapy.

SIGNIFICANCE STATEMENTThe electrical impedance in limbic brain structures (amygdala, hippocampus, anterior nucleus thalamus) is shown to exhibit oscillations over multiple timescales. We observe that impedance oscillations with ultradian and circadian periodicities are associated with transitions between wakefulness, NREM, and REM sleep states. There are also impedance oscillations spanning multiple weeks that do not have a clear behavioral correlate and whose origin remains unclear. These multiscale impedance oscillations will have an impact on extracellular ionic currents that give rise to local field potentials, ephaptic coupling, and the tissue activated by electrical brain stimulation. The approach for measuring tissue impedance using perturbational electrical currents is an established engineering technique that may be useful for tracking ECS volume.
OPTIMIZATION OF RAWHIDE COLLAGEN DEFIBRILLIZATION PROCESS
Authors: Danylkovych Anatolii , Lishchuk Viktor , Sanginova Olga , Shakhnovsky Arcady
Published: August 2023

The paper features the rawhide collagen defibrillization process in the elastic leather materials manufacturing. Optimal colloid-chemical properties of semi-processed products were defined by way of using mathematical optimization of rowhide liming process. It was found that during the alkaline treatment of raw material (in the operating temperature range) the degree of defibrillation of raw material raises (in proportion to the derm collagen swelling) with increase in the ratio of process solution to the mass of raw material, and the extremum of hydrothermal stability and leather yield can be estimated. It was also shown that the degree of swelling decreases with a decreasing ratio of sodium sulphide and sodium hydrosulphide, and the leather area yield reaches the maximum value at the equal proportion of these reagents. Multicriteria optimization of rawhide liming process using the Harrington’s desirability function was carried out. The developed technology of soaking and liming was tested under production conditions. The above-mentioned low-waste technology provides elastic leather materials with a yield increase by 3.5%, which meet the industry standards requirements.
Sintaxis y discurso: el infinitivo independiente en los tuits como variante y punto de vista desubjetivador
Authors: Serrano María José
Published: August 2023

En los entornos digitales y, especialmente en la red social Twitter, se produce un uso de infinitivo independiente de modo recurrente, que se utiliza para expresar estados o emociones y que en esta investigación se denominará infinitivo comunicativo. Es posible explicar el uso del infinitivo independiente en los tuits como un recurso de desfocalización del agente, el cual, paralelamente, construye un punto de vista desubjetivador del discurso. Para llegar a esta conclusión, basada en un análisis discursivo-cognitivo del fenómeno, que se fundamenta en la prominencia cognitiva, se analizará el tipo de lexema verbal con el que se construye el tuit con infinitivo comunicativo, puesto que se considera que, en la mayoría de los casos, el propio lexema construye por sí mismo el evento comunicativo y se convierte así en un cauce de expresión personal.
The Mediating Effect of Employee Behavior on Strategic Human Resource Management Practices and Organizational Performance in Jordanian Telecommunication Companies
Authors: Almahairah Mohammad Salameh Zaid , Lawama Haron ismail al- , Salah Lama Adel , Alhawamdeh Abbas Mohammad , Hijazi Haitham Ali , Fouri Areeg Al , Sakher Shatha
Published: August 2023

The ability of managers to make strategies and decisions to improve performance is increased by their awareness of the elements that affect organizational performance, making it one of the key concerns for both profit-making and nonprofit organizations. Therefore, the present study aims to propose a conceptual framework for the mediating effect of employee behavior on strategic human resource management practices and organizational performance in Jordanian telecommunication companies. Strategic human resource management strategies have a favorable direct impact on organizational performance, according to a comprehensive evaluation of the research. Furthermore, a thorough study of the literature revealed that strategic approaches to human resource management have a favorable direct impact on employee behavior. While this was going on, a thorough review of the literature revealed that employee conduct positively affected organizational performance directly. Future research should analyze the conceptual framework utilizing sophisticated statistical techniques to examine the prior hypotheses and deliver the findings to decision- makers and managers in Jordanian telecommunication businesses, according to the study's recommendations.
The Role of Ankle Brachial Index in Patient with Peripheral Arterial Disease; Diagnostic and Prognostic Tool
Authors: Haibi Yaser Aamer Eisa Al- , Hussien Abdulameer Muhsen
Published: August 2023

Objectives: Peripheral arterial disease is an independent risk factor for developing major cardiovascular events, and even death; this makes its diagnosis important in early detection and prevention of these events. Ankle brachial index is a non-invasive, simple, bedside screening, diagnostic and even prognostic tool, patients with ABI less than 0.9 were found to have PAD, and at risk of cardiovascular events. Methods: A descriptive cross-sectional study of 338 patients was conducted during the period October 2021 to December 2022. They were referred to vascular and endovascular surgery unit at Ghazi Al-Hariri multispecialty teaching hospital/ Medical city teaching, they were presented with intermittent claudication and other PAD symptoms. Peripheral endovascular angioplasty was done; all were subjected to Ankle brachial index measurement. Results: The study involves 338 patients, among them males were 242 (72%), females were 96 (28%).  Age ranged from 25-92 years old, with an age average of 61 years. A total of 203 (60%) were presented with classical lower limb claudication, 100 (30%) patients with atypical symptoms and only 35 (10%) patients with critical limb ischemia. A total of 216 (64%) patients with ABI between 0.4-0.9; 100 (29%) patients with ABI greater than 0.9; 19 (6%) patients with ABI less than 0.4, and only 3(1%) patients with ABI more than 1.4. Conclusion: Ankle brachial index is a useful, cost effective, simple non-invasive diagnostic tool in patients with peripheral arterial disease.
Hydrothermal Carbonization of Urban Lignocellulosic Wastes – A Review
Authors: Llanos Segundo Alberto Vásquez , Quispe Ada Patricia Barturén , Scheineder Sebastian Huangal , Barrios Isis Cristel Córdova , Collana Juan T. Medina , Purihuamán Marilín Sánchez , Franco Jorge Flores , Farfan Carmen Carreño- , Gamarra Felix M. Carbajal
Published: August 2023

Expressional dependence on the consumption of products from fossil sources still prevails in the third decade of this century. Meanwhile, the environmental impacts caused by their excessive use, especially fuel, have been criticized more intensely and compromise the sustainability of the Earth. In addition, it influences the consolidation of new sources and ecological matrices. Therefore, this scenario requires the search for new natural, renewable and sustainable sources. In this context, evidence indicates that biomass is one of the sources with solid foundations to replace fossil sources. Urban lignocellulosic biomass shows various attributes, such as being abundant, low cost, easy to locate, renewable, etc. In this line, thermochemical methods have been cited as the most appropriate and sustainable for their transformation. In this context, this scientific review explored the transformation of urban lignocellulosic biomass into carbon fractions through hydrothermal carbonization. After the components of the urban lignocellulosic biomass were provided, such as the chemical composition, physical-chemical and energetic properties, the general vision of hydrothermal carbonization was introduced, with the temperature and residence time were identified as the parameters with the major influence on the thermochemical reaction. Finally, the authors described the capability of hydrothermal carbonization to yield products in the liquid, gas, and solid states (hydrochar), along with addressing the challenges associated with hydrothermal carbonization of urban lignocellulosic waste.
HUBUNGAN PANJANG-BOBOT, POLA PERTUMBUHAN DAN FAKTOR KONDISI IKAN PELAGIS KECIL DI PERAIRAN SUKABUMI DAN LEBAK
Authors: Romdoni Taufiq Ahmad , Taryono Taryono , Simanjuntak Charles PH , Munandar Arif , Nurfaiqah Seplina , Lisamy Sisilia Eka Aisyah
Published: August 2023

Perairan Lebak, Banten dan Sukabumi, Jawa Barat yang merupakan bagian dari WPPNRI 573 adalah daerah penangkapan ikan pelagis. Kajian mengenai hubungan panjang-bobot serta faktor kondisi ikan pelagis kecil di kedua daerah tersebut masih sangat terbatas. Penelitian ini dilakukan untuk menganalisis hubungan panjang-bobot, pola pertumbuhan dan faktor kondisi ikan pelagis kecil di perairan Sukabumi dan Lebak. Ikan pelagis kecil yang dijadikan sampel meliputi kembung lelaki (Rastrelliger kanagurta) dan layang (Decapterus macarellus). Sampel ikan diperoleh dari tiga pendaratan ikan yaitu PPI Binuangeun, PPN Palabuhanratu dan PPI Ciwaru dari bulan Juli-Desember 2022. Persamaan hubungan panjang-bobot ikan kembung lelaki adalah W=0,0000075.L3,125 (R2 = 0,93), sedangkan pada ikan layang adalah W=0,0000059.L3,136 (R2 = 0,96). Pola pertumbuhan ikan kembung lelaki dan ikan layang diperoleh alometrik positif. Hasil kondisi relatif (Kn) ikan kembung lelaki berada pada kisaran 0,91-1,06, nilai paling rendah ditemukan pada bulan Agustus dan nilai paling tinggi ditemukan pada bulan Desember. Sementara itu nilai faktor kondisi relatif ikan layang berkisar antara 0,87-1,06, dengan nilai terendah saat bulan Juli dan tertinggi saat bulan Desember. Pola pertumbuhan alometrik positif dan faktor kondisi yang tinggi mengindikasikan bahwa status ikan kembung lelaki dan ikan layang di perairan Sukabumi dan Lebak berada dalam kondisi yang baik.
DISTRIBUSI, KELIMPAHAN DAN VARIASI UKURAN LARVA IKAN DI ESTUARIA SUNGAI MUSI
Authors: Prianto Eko , Nurdawaty Syarifah , Kamal Mohammad Mukhlis
Published: August 2023

Penelitian tentang distribusi, kelimpahan dan ukuran larva ikan dilakukan pada bulan Maret, Mei, Juni dan Oktober 2011. Stasiun pengambilan contoh meliputi Muara Delta Upang (stasiun 1), Muara Sungai Musi (stasiun 2) dan Pulau Payung (stasiun 3). Pengambilan larva pada siang hari menggunakan Bongo net yang berukuran mata jaring 250 µm. Hasil identifikasi diperoleh 13 famili ditinjau menurut musim, pada bulan Mei dan Oktober masing-masing diperoleh 7 famili, dan pada bulan juni sebanyak 3 famili. Kelimpahan larva ikan berkisar antara 9-46 ind/m3 dengan jumlah yang tertinggi (46 ind/m3) pada bulan Mei dan terendah pada bulan Juni (9 ind/m3). Larva ikan dari famili Gobiidae memiliki sebaran yang cukup luas baik spasial maupun temporal. Variasi ukuran larva ikan menurut famili setiap bulannya memiliki variasi ukuran yang hampir sama. Research about the distribution, abundance and size of fish larvae was conducted in March, May, June and October 2011. Sampling stations encompasses Delta Upang (station 1), Muara Sungai Musi (station 2) and Pulau Payung (station 3). Larvae taken during the daytime using a Bongo net with mesh size of 250 µm. Identification results obtained 13 families based on the season, in May and October respectively 7 families, and in June as many as 3 families. Abundance of fish larval around 9-46 ind/m3 with the highest number (46 ind/m3) in May and the lowest in June (9 ind/m3). Larvae of Gobiidae family have a large distribution on spatial and temporal. The variation in size of fish larvae by family on each month are the same.
BIOLOGI REPRODUKSI IKAN BETUTU (Oxyeleotris marmorata) DI WADUK KEDUNGOMBO PROPINSI JAWA TENGAH
Authors: Fatah Khoirul , Adjie Susilo
Published: August 2023

Ikan betutu (Oxyeleotris marmorata) merupakan jenis ikan yang mempunyai nilai ekonomis penting di Waduk Kedungombo. Ikan betutu di Waduk Kedungombo termasuk jenis ikan yang dominan dan digemari masyarakat. Penelitian ini mengetahui mengenai biologi reproduksi ikan betutu, dilakukan pada bulan Maret, Mei, Juli dan Oktober 2011. Penelitian ini dilakukan melalui metode survei dengan pengambilan contoh dilakukan secara purposive sampling. Untuk mengetahui tingkat kematangan gonad diamati secara morfologi dan penentuan fekunditas dihitung dengan metode gravimetrik. Hasil penelitian menunjukan bahwa ikan betutu memijah secara bertahap (parsial) dimulai pada bulan Maret, nilai ukuran pertama kali matang gonad pada ukuran 16,5-18,1 cm. Fekunditas berjumlah antara 6414-56.302 butir  dengan diameter telur pada kisaran antara 0,2 – 0,67 mm, serta indeks kematangan gonad ikan betutu jantan berkisar antara 0,03 % - 0,65 %, untuk ikan betutu betina berkisar antara 0,11 % - 5,57 % . Betutu (Oxyeleotris marmorata)  is one of fish species having the economically important value in Kedungombo reservoir. In Kedungombo betutu is a kind of fish which is dominant and it is liked by the people. The objectives of the research were to get data and information on biology reproduction such as gonadal maturity, fecundity and egg diameter has been carried on March, May, July and October 2011. The research is done with survey method, meanwhile the samples taken by purposive sampling. The gonadal maturity is used by morphology, meanwhile fecundity is counted by gravimetric. The result of the research shows that betutu spawning by partial which is started on March, the size of the fish first mature gonads ranged from 16,5-18,1 cm, Fecundity of betutu shows that the total egg varied between 6414-56.302 with egg diameter is between 0,2 – 0,67 mm, Meanwhile index maturity of gonad male is between 0,03 % - 0,65 % and famale between 0,11 % - 5,57 % . Based on the aspects some water quality.
Qigong (chee gung)
Authors: Coltri Marzia Anna
Published: August 2023

Qigong, like other Eastern techniques such as yoga and mindfulness meditation, has been shown to be beneficial for mental and physical health and has been a topic of debate in academic and scientific literature in recent decades. Qigong, which has been practised in China since ancient times, is becoming increasingly popular in the West. This article first examines the philosophical and spiritual roots of Qigong and how it has evolved in modernity. Second, it focuses on wellbeing-related issues based on the experiences of the researchers and practitioners who worked with clients ranging from members of Generation Z to older adults. Qigong practitioners frequently describe their technique as delivering a sense of inner serenity, relaxation, and mental clarity. Third, I challenge the various Qigong presumptions that are problematic in mainstream Western medical science, drawing on a variety of examples. Medical Qigong claims to boost cognitive capacities and concentration and provide physical benefits such as greater strength, balance and flexibility, as well as a sense of wellbeing. Stress and anxiety levels are also said to be reduced, according to studies. These claims, and the location of Qigong in the contemporary Western spiritual landscape, are evaluated.
Análisis de las estrategias educativas y de formación implementadas en una Institución Educativa con el fin de lograr la apropiación del sistema de gestión de seguridad y salud en el trabajo priorizando riesgos psicosociales. Estudio de caso
Authors: Garzón Tovar Ligia Nathalya , González Suarez Yinna Paola , Castro Linares Yeimy Alejandra , Fajardo Vela Jennifer Lorena , Chacón Quevedo Jeison Armando
Published: August 2023

Los docentes en el cumplimiento de sus funciones se encuentran expuestos a diversos riesgos a lo largo de su vida laboral, pero un porcentaje importante no tiene conocimiento acerca de cuáles serían esos riesgos y cómo al no tomar acciones eficaces de prevención se compromete su salud física y mental. Esta investigación ha pretendido identificar y analizar las herramientas de formación y capacitación en una institución educativa privada de la ciudad de Bogotá, las cuales se utilizan para apropiar su sistema de gestión en Seguridad y Salud en el trabajo, esto a partir de una metodología cuantitativa y cualitativa donde a través de una encuesta que incluye preguntas cerradas y abiertas a 50 docentes. De igual manera se realizaron procesos de observación y diálogo, con docentes desde el grado de Toddlers hasta los docentes de bachillerato indagando sobre, la percepción que se tiene frente al sistema de gestión de la institución, su implementación y su importancia a la hora de reconocer los riesgos psicosociales y las consecuencias para la salud mental de los trabajadores. Los resultados parciales muestran que el 70 % de los docentes están de acuerdo en que, faltan actividades para prevenir el riesgo psicosocial; para los docentes es importante el tiempo de 45 a 60 min para las capacitaciones, pero el colegio solo destina 30 min para esto, así mismo, los docentes consideran que hace falta capacitación y formación en prevención de riesgos. El 80 % están de acuerdo con que se implementen nuevas estrategias para la capacitación y formación en Seguridad y Salud en el trabajo.
Responsabilidad disciplinaria, ética y moral del profesional en gestión de la Seguridad y Salud en el Trabajo
Authors: Orellanos Chaparro Edgar Stefan , Quiroz Rubiano Mónica María
Published: August 2023

Desde los albores de las diferentes profesiones reguladas, ha surgido la inquietud sobre la responsabilidad derivada de una mala praxis profesional, para ello se han realizado múltiples estudios sobre la responsabilidad ética, moral y disciplinaria; sin embargo,  tratándose de los profesionales en Gestión de la Seguridad y Salud en el Trabajo (SG-SST) es muy poco el camino que se ha allanado y mucho menos sobre lo propio en punto a los estudiantes, por lo cual se pretenderá abordar en esta conferencia por lo menos: ¿Qué es la responsabilidad?, ¿En qué se fundamenta la responsabilidad? y ¿Por qué son importantes los estudios sobre la responsabilidad?
Propuesta de diseño ergonómico de descanso provisional en puesto de trabajo para surtidores de gasolina y diésel en estaciones de servicio en el Estado de Nayarit, México
Authors: De La Cruz Espinosa Ignacio , Rosales Cinco Rosa Amelia , García Guzmán Fernando
Published: August 2023

La problemática de los puestos de trabajos y diseños ergonómicos a los que se tiene que adaptar el personal que trabaja hoy en día, son fuentes de lesiones músculo-esquelética que al paso del tiempo puede repercutir en incapacidades parciales o permanentes. El personal despachador de una estación de servicio es uno de los principales afectados en un campo operativo de ese ramo. El objetivo es proponer un diseño ergonómico de descanso provisional en el puesto de trabajo para despachadores de gasolinas y diésel en estaciones de servicios del Grupo Sierra; para realizar este proyecto se realizó un diseño de investigación observacional, transversal, así como descriptivo y mixto dentro de un sector de despachadores de gasolinas y diésel, en las estaciones de servicios de Grupo Sierra, en un periodo de agosto 2020 a octubre 2021.De un total de 71 despachadores con un criterio de selección de la población, distribuidos en 8 estaciones de servicios de diferentes municipios del Estado de Nayarit, México.
 
Entre los resultados destacados se realizaron 3 diferentes metodologías ergonómicas, 1.- Lista de Comprobación Ergonómica: 93 % sin acción, 5 % con acciones a realizar y el 2 % con acción urgente. 2.-RULA: Se requiere rediseño de la tarea. 3.- Evaluación Postural Rápida: existe riesgo de fatiga conviene introducir mejoras en el puesto. Analizando los resultados obtenidos se puede identificar la carga postural de los despachadores, la falta de un descanso provisional para los despachadores es fundamental para mitigar estos riesgos ergonómicos y lesiones que impiden desarrollar sus labores. Se realizan propuestas de diseño ergonómico de descanso provisional. Para llegar a la conclusión de identificar una propuesta de diseño ergonómico de descanso provisional y sus beneficios iniciales mostrados a partir de la intervención del prototipo, fue un complemento en las jornadas de trabajo, pues fue adecuado y cómodo para ellos como apoyo corporal durante los lapsos de pausas laborales.
Factores de riesgo psicosocial en los estudiantes de medicina de la Universidad de La Sabana durante en el marco del desarrollo del COVID-19
Authors: Barbosa Salazar Daniela Lucia , Cortes Duarte Cindy Zoraya , Marroquín Díaz Lina María , Oviedo Correa Julietha
Published: August 2023

El presente artículo tiene la característica de encontrarse enfocado hacia la identificación, análisis y descripción de los factores de riesgo psicosociales generados en el marco de la pandemia de Covid-19 en los estudiantes de medicina de la Universidad de La Sabana, que ejercen sus clases prácticas, rotaciones, internados o residencias en la Clínica Universidad de La Sabana – Chía. Teniendo en cuenta que los profesionales de la salud han sido permanentemente vulnerables a las afectaciones psicosociales, en esta ocasión se agrega a esta dificultad, el comportamiento y las manifestaciones de un estudiante que enfrenta su vida académica y laboral encaminada a ser parte de este personal o que ya ejerce allí de ciertas maneras. El propósito de este estudio es dar un enfoque de descripción de comportamientos psicosociales que han sufrido los estudiantes de medicina frente a la educación remota o virtual y después de un lapso de tiempo transcurrido enfrentarse a su vida laboral sin prácticas o sin referentes hospitalarios presenciales (Barbosa, Cortes & Marroquín, 2022).
Prospectiva de seguridad y salud en el trabajo en las Universidades del Perú
Authors: Navarro Zamudio Maik Denisse
Published: August 2023

La presente investigación titulada “Prospectiva de seguridad y salud en el trabajo en las Universidades del Perú” tiene como objetivo identificar los efectos psicosociales que genera el tecno-estrés en los docentes de la Facultad de Ciencias de la Salud, como resultado de la exposición permanente a factores de riesgo ligados a las nuevas tecnologías de información; y el rol proactivo que tiene que tener la universidad a fin de contemplar en sus documentos internos, políticas y estrategias de Seguridad y Salud en el Trabajo que busquen el bienestar en sus docentes.
Papel de las empresas en los procesos de calificación de origen y determinación de PCL: ¿cómo podemos ser protagonistas y beneficiar a nuestros trabajadores?
Authors: Vargas Córdoba Jaime Alejandro
Published: August 2023

Tradicionalmente se ha considerado que los procesos de Calificación de Origen y Determinación de Pérdida de Capacidad Laboral son responsabilidad exclusiva de las aseguradoras y Juntas de Calificación de Invalidez , sin embargo la realidad muestra que para que estos procesos tengan éxito se requiere del concurso de los empleadores, especialmente en la entrega de información relevante y oportuna sobre los factores de riesgo presentes que permitan a los entes calificadores determinar de manera precisa y fidedigna el origen de los eventos, brindándole a los trabajadores la posibilidad de recibir las prestaciones económicas y asistenciales que correspondan, generando bienestar a ellos y sus familias.
Gestión de la seguridad y salud en el trabajo: un factor determinante de la reputación corporativa
Authors: Ospino Rivera Johanna Sofía , Sandoval Jaimes Samara
Published: August 2023

El objetivo de este estudio se centró en establecer la influencia que tiene la gestión de la seguridad y salud en el trabajo en la reputación corporativa. Para ello, se realizó una revisión de literatura de tipo narrativo en bases de datos como Springer, ScienceDirect, SciELO, Taylor & Francis Online, ProQuest, y el navegador Google Scholar, en idioma inglés y español, durante los años 2012 – 2022. Dicha revisión evidenció el efecto que tiene la gestión de la seguridad y salud en el trabajo en la reputación de una corporación. Con base en los resultados de la investigación se resalta que, de la misma manera que se gestionan los riesgos laborales se genera una actividad inmediata en la reputación corporativa, tal y como se establece en los monitores de evaluación reputacional.
Desafíos de la seguridad y Laboral en la minería ilegal de Colombia
Authors: Franco Carrillo Edison Ferney
Published: August 2023

El desarrollo de las diferentes actividades de la minería en las modalidades de ilegal, Informal y artesanal, conllevan un seguimiento de enfermedades que son causa de desmejora en la salud de los individuos y de las comunidades adyacentes a donde se realizan estos procesos, asimismo cuando transitan a los denominados títulos de “formalizados”, el desafío de la Seguridad y Salud Laboral empieza en el cambio de las costumbres ancestrales y la adaptación a los nuevos ambientes laborales; de igual forma, las enfermedades que se presentan posteriormente al tiempo de contratados afectan al trabajador de manera repentina.
Palabras fantasmas, Pantallas voraces
Authors: Romero-Baltodano Andrés
Published: August 2023

Esta segunda edición ampliada de Palabras Fantasmas Pantallas Voraces surge a partir de proyecciones, evoluciones y ajustes de la metodología de la primera edición. Estas dos primeras décadas del siglo XXI nos han planteado diversos retos que nos sitúan entre la tecnología (que simula progreso y acercamiento a la ciencia ficción), la tenebrosa llamada “inteligencia artificial” que quiere suplantar a los autores y un inmenso “bazar” de contenidos sin valor informativo, aunque aún subsisten acciones a favor del mundo y su avance mental. La hiperproducción de cine se mezcla con billones de contenidos subidos a las redes y por eso esta era, podríamos denominarla: era de los contenidos es por eso que esta segunda edición ampliada, se hace aún más urgente y útil para quienes quieran justamente abordar el complejo proceso de realizar un guion, que no se quede en la forma, sino que ausculte el fondo desde lo ideológico, la memoria, las identidades, con contenidos argumentados y poderosos que puedan eclipsar tanto contenido vacío y superficial. Estos apuntes permiten enfrentarse a la creación de un guion contemporáneo como un ejercicio literario de una autora o autor diverso defensor de ideas y puntos de vista autónomos, que sean parte de la historia emocional del mundo: el arte.